Author: "Philippe, Zeitoun" / Topic: business - Searchworks@Jio Institute Digital Library Search Results

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101 results on '"Philippe, Zeitoun"'

1. Phase-Contrast Tomography with X-ray Hartmann wavefront sensor

Author: Philippe Zeitoun, Ombeline de La Rochefoucauld, Ginevra Begani Provinciali, Alessia Cedola, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), CNR Istituto di Nanotecnologia (NANOTEC), Consiglio Nazionale delle Ricerche [Roma] (CNR), and Imagine Optic
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Phase contrast tomography, Optics, Materials science, business.industry, [PHYS.PHYS.PHYS-BIO-PH]Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph], X-ray, Wavefront sensor, business, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2021
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2. Numerical investigation of the effect of number of zones on Fresnel Zone Plates imaging performance under different coherence conditions

Author: Ying Li, Ombeline de La Rochefoucauld, and Philippe Zeitoun
Subjects: Physics, Diffraction, Integral imaging, Medical diagnostic, Single exposure, Fresnel zone, business.industry, Scalar (physics), Zone plate, law.invention, Optics, law, business, Coherence (physics)
Abstract: In recent years, integral imaging has received increasing attention as a promising 3D imaging technique with one single exposure. In medical diagnostics, the X-ray integral imaging system potentially has a much shorter exposure time than the conventional computed tomography, reducing the radiation damage to the patient. By replacing the micro-lens array with a micro-Fresnel Zone Plate (FZP) array, the classical visible integral imaging system can be transposed to an X-ray system. However, limited by the micro-scale dimensions of FZP in the array and current manufacturing techniques, the number of zones of FZP is required to be small. This may have an important impact on the FZP imaging performance. Based on the scalar diffraction theory, this paper introduces a simulation method and numerically investigated the effect of the number of zones on the FZP imaging performance under different coherence conditions.
Published: 2021
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3. Towards X-ray plenoptic imaging: Emulation with a laboratory X-ray scanner

Author: Ombeline de La Rochefoucauld, Robert van Liere, Philippe Zeitoun, Kees Joost Batenburg, Sophia Bethany Coban, Felix Lucka, Nicola Viganò, Marta Fajardo, and Centrum Wiskunde & Informatica, Amsterdam (CWI), The Netherlands
Subjects: Laser velocimetry, Emulation, Scanner, Optics, Materials science, Three dimensional imaging, business.industry, X-ray, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, business, ComputingMethodologies_COMPUTERGRAPHICS
Abstract: X-ray plenoptic apparatuses acquire multi-view single-shot radiographs, but their development is challenging. We present a physical emulation setup for rapidly and inexpensively exploring their design parameter-space, that only uses a flexible laboratory X-ray scanner.
Published: 2021

4. Simulation of Fresnel Zone Plate Imaging Performance with Number of Zones

Author: Ombeline de La Rochefoucauld, Philippe Zeitoun, Ying Li, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Imagine Optic, and European Project: 871124
Subjects: Diffraction, Image formation, Medical diagnostic, Letter, Computer science, Zone plate, lcsh:Chemical technology, 01 natural sciences, Biochemistry, fresnel zone plate, Analytical Chemistry, law.invention, 010309 optics, 03 medical and health sciences, 0302 clinical medicine, Optics, law, X-ray integral imaging, 0103 physical sciences, lcsh:TP1-1185, 030212 general & internal medicine, Electrical and Electronic Engineering, Instrumentation, wave propagator, ComputingMilieux_MISCELLANEOUS, [PHYS]Physics [physics], Integral imaging, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Detector, Scalar (physics), modeling, Atomic and Molecular Physics, and Optics, Imaging technology, business
Abstract: In recent years, integral imaging, a promising three-dimensional imaging technology, has attracted more and more attention for its broad applications in robotics, computational vision, and medical diagnostics. In the visible spectrum, an integral imaging system can be easily implemented by inserting a micro-lens array between a image formation optic and a pixelated detector. By using a micro-Fresnel Zone Plate (FZP) array instead of the refractive lens array, the integral imaging system can be applied in X-ray. Due to micro-scale dimensions of FZP in the array and current manufacturing techniques, the number of zones of FZP is limited. This may have an important impact on the FZP imaging performance. The paper introduces a simulation method based on the scalar diffraction theory. With the aid of this method, the effect of the number of zones on the FZP imaging performance is numerically investigated, especially the case of very small number of zones. Results of several simulation of FZP imaging are presented and show the image can be formed by a FZP with a number of zones as low as 5. The paper aims at offering a numerical approach in order to facilitate the design of FZP for integral imaging.
Published: 2020
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5. Modelling of Phase Contrast Imaging with X-ray Wavefront Sensor and Partial Coherence Beams

Author: Ginevra Begani Provinciali, Alessia Cedola, Ombeline de La Rochefoucauld, Philippe Zeitoun, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institute of Nanotechnology, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Imagine Optic, European Project: 851956, European Project: 871124, and Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome]
Subjects: Letter, Wave propagation, 030303 biophysics, Phase (waves), Hartmann sensor, lcsh:Chemical technology, 01 natural sciences, Biochemistry, phase-contrast imaging, partial coherence, Analytical Chemistry, law.invention, 010309 optics, 03 medical and health sciences, Optics, law, 0103 physical sciences, lcsh:TP1-1185, Sensitivity (control systems), Electrical and Electronic Engineering, Instrumentation, ComputingMilieux_MISCELLANEOUS, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], 0303 health sciences, [PHYS.PHYS]Physics [physics]/Physics [physics], business.industry, Phase-contrast imaging, Wavefront sensor, Laser, simulation, Atomic and Molecular Physics, and Optics, business, Refractive index, Beam divergence
Abstract: The Hartmann wavefront sensor is able to measure, separately and in absolute, the real δ and imaginary part β of the X-ray refractive index. While combined with tomographic setup, the Hartman sensor opens many interesting opportunities behind the direct measurement of the material density. In order to handle the different ways of using an X-ray wavefront sensor in imaging, we developed a 3D wave propagation model based on Fresnel propagator. The model can manage any degree of spatial coherence of the source, thus enabling us to model experiments accurately using tabletop, synchrotron or X-ray free-electron lasers. Beam divergence is described in a physical manner consistent with the spatial coherence. Since the Hartmann sensor can detect phase and absorption variation with high sensitivity, a precise simulation tool is thus needed to optimize the experimental parameters. Examples are displayed.
Published: 2020
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6. High-harmonic generation wave front dependence on a driving infrared wave front

Author: Gareth O. Williams, S. Künzel, Jayanath Koliyadu, Philippe Zeitoun, Mukhtar Hussain, Barbara Keitel, Thomas Wodzinski, Elke Plönjes, and Marta Fajardo
Subjects: Physics, Wavefront, Photon, business.industry, Holography, Laser, 01 natural sciences, Coherent diffraction imaging, Atomic and Molecular Physics, and Optics, Deformable mirror, law.invention, 010309 optics, Optics, law, Extreme ultraviolet, 0103 physical sciences, High harmonic generation, Electrical and Electronic Engineering, business, Engineering (miscellaneous)
Abstract: With high-harmonic generation (HHG), spatially and temporally coherent XUV to soft x-ray (100 nm to 10 nm) table-top sources can be realized by focusing a driving infrared (IR) laser on a gas target. For applications such as coherent diffraction imaging, holography, plasma diagnostics, or pump–probe experiments, it is desirable to have control over the wave front (WF) of the HHs to maximize the number of XUV photons on target or to tailor the WF. Here, we demonstrate control of the XUV WF by tailoring the driving IR WF with a deformable mirror. The WFs of both IR and XUV beams are monitored with WF sensors. We present a systematic study of the dependence of the aberrations of the HHs on the aberrations of the driving IR laser and explain the observations with propagation simulations. We show that we can control the astigmatism of the HHs by changing the astigmatism of the driving IR laser without compromising the HH generation efficiency with a WF quality from λ / 8 to λ / 13.3 . This allows us to shape the XUV beam without changing any XUV optical element.
Published: 2020

7. High numerical aperture Hartmann wave front sensor for extreme ultraviolet spectral range

Author: Lu Li, Marta Fajardo, Ombeline de La Rochefoucauld, Jayanath Koliyadu, Hannah Donnelly, Mabel Ruiz-Lopez, Olivier Delmas, Cangtao Zhou, Matthew Zepf, Domenico Alj, Philippe Zeitoun, Guillaume Dovillaire, Shuangchen Ruan, Brendan Dromey, Center for Advanced Material Diagnostic Technology, Shenzhen Technology University, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Group of Lasers and Plasmas, GoLP/Instituto de Plasmas e Fusão Nuclear-Laboratório Associado, Deutsches Elektronen-Synchrotron [Hamburg] (DESY), Imagine Optic, Helmholtz-Institut Jena, European Project: 665207,H2020,H2020-FETOPEN-2014-2015-RIA,VOXEL(2015), European Project: 654148,H2020,H2020-INFRAIA-2014-2015,LASERLAB-EUROPE(2015), European Project: LOA002209, and European Project: LOA002440
Subjects: Extreme ultraviolet lithography, 02 engineering and technology, Radiation, 01 natural sciences, 7. Clean energy, 010309 optics, Root mean square, Optics, sensor, 0103 physical sciences, Calibration, Astrophysics::Solar and Stellar Astrophysics, High harmonic generation, ComputingMilieux_MISCELLANEOUS, Wavefront, Physics, [PHYS.PHYS]Physics [physics]/Physics [physics], business.industry, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Numerical aperture, laser, Extreme ultraviolet, XUV, 0210 nano-technology, business
Abstract: We present a novel, to the best of our knowledge, Hartmann wave front sensor for extreme ultraviolet (EUV) spectral range with a numerical aperture (NA) of 0.15. The sensor has been calibrated using an EUV radiation source based on gas high harmonic generation. The calibration, together with simulation results, shows an accuracy beyond λ / 39 root mean square (rms) at λ = 32 n m . The sensor is suitable for wave front measurement in the 10 nm to 45 nm spectral regime. This compact wave front sensor is high-vacuum compatible and designed for in situ operations, allowing wide applications for up-to-date EUV sources or high-NA EUV optics.
Published: 2020
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8. APOLLON: a multi-PW laser facility (Conference Presentation)

Author: Philippe Zeitoun and Sylvie Jacquemot
Subjects: Physics, business.industry, Compton scattering, Electron, Laser, Betatron, law.invention, Optics, Upgrade, law, Focal length, High harmonic generation, business, Beam (structure)
Abstract: APOLLON laser facility was initiated by Nobel Laureat Gerard Mourou to become one of the few European 10 PW laser facilities. End of 2018, APOLLON reached 1 PW peak power. Experiments at this power are under preparation with an expected start during spring 2019 or early summer. In parallel, today the laser is under upgrade for reaching 10 PW in few years with an intermediate step at around 5 PW dedicated to the development of experiments at this high power. APOLLON will be open for external users on 2020 at 1 PW and very likely on 2021 at several PW. APOLLON has two experimental areas on which X-ray sources will be developed. The so-called "Long focal length area" (LFA) is dedicated to electron acceleration and related X-ray emission. The room may accommodate focal length up to 9m. The experiments are designed in a way to allows single or double stage electron acceleration with expected electron energies reaching several 10's of GeV. X-ray emission from betatron will be used as a diagnostic of electron acceleration processes but will be also developed independently aiming at achieving energetic and well-collimated X-ray beam. The experiment has been set in a way to allows heads-on electron-laser collision for Compton scattering experiments. The second target area called "Short Focal area", aims at achieving intensities as high as possible for electron and ion acceleration, non-linear QED tests and X-ray generation through high harmonic generation on solid. X-ray emission ranging up to 10 keV is foreseen, with very high peak power at lower energy.
Published: 2019
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9. Hartmann wavefront sensor in the EUV and hard X-ray range for source metrology and beamline optimization (Conference Presentation)

Author: Daniele Cocco, Martin Piponnier, Rakchanok Rungsawang, Mourad Idir, Ombeline de La Rochefoucauld, Xavier Levecq, Dietmar Korn, Guillaume Dovillaire, Samuel Bucourt, Fabrice Harms, and Philippe Zeitoun
Subjects: Wavefront, Physics, Speckle pattern, Interferometry, Optics, Beamline, business.industry, Extreme ultraviolet lithography, Wavefront sensor, Grating, business, Metrology
Abstract: Emergence of ultrafast EUV to X-ray sources, Free Electron Laser, High harmonic generation, betatron and Compton, has opened new paradigms in physical, chemical, biological and medical sciences by either producing ultrahigh intensities or for ultrafast imaging or by enabling pump-probe experiments at new timescales. Most of these experiments require an excellent or at least a properly defined wavefront (WF). A number of WF sensing techniques have been proposed in the X-Rays, including grating-based interferometry, speckle tracking, pencil beam deflectometry, or curvature sensors. Among these techniques, Hartmann WF sensing demonstrated a number of advantages, such as insensitivity to vibrations, achromaticity and very large dynamic range. Furthermore, the phase and intensity maps are directly retrieve and nearly instantaneously without the use of complex and long algorithms. Imagine Optic developed EUV to X-ray WF sensors since more than 15 years taking benefit of decades of experience in the visible range. We will show several experiments using our EUV sensors for metrology and optimization of ultrafast EUV sources. We recently developed a Hartmann sensor in the 5 - 25keV range. The device is based on a custom scintillator-to-detector optical relay system, as well as on an optimal Hartmann array geometry, providing 20µm spatial WF sampling resolution, over a 3x3 mm² pupil. We show the results of first experiments on a synchrotron beamline at 10 keV, achieving 4pm WF repeatability.
Published: 2019
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10. EUV/X-ray Hartmann wavefront sensors and adaptive optics at Imagine Optic (Conference Presentation)

Author: Martin Piponnier, Lorenzo Raimondi, Mourad Idir, Samuel Bucourt, Ombeline de La Rochefoucauld, Philippe Zeitoun, Dietmar Korn, Guillaume Dovillaire, Fabrice Harms, Rakchanok Rungsawang, Daniele Cocco, and Xavier Levecq
Subjects: Physics, Wavefront, business.industry, Extreme ultraviolet lithography, Curved mirror, Laser, law.invention, Numerical aperture, Metrology, Telescope, Optics, law, business, Adaptive optics
Abstract: Since its creation in 1996, Imagine Optic designed and manufactured high performance Shack-Hartmann wavefront (WF) sensors for many kinds of applications such as telescope alignment, laser characterization, optics qualification or adaptive optics, and for many different fields such as space optics, microscopy, high power lasers or lithography. Since 2003, Imagine Optic is actively developing EUV to X-ray Hartmann WF sensors for applications on metrology beams emitted by synchrotrons, free-electron lasers, plasma-based soft X-ray lasers and high harmonic generation. Our most recent developments include the realization of a EUV sensor adapted to strongly convergent or divergent beams having numerical aperture as high as 0.15, as well as the production of a hard X-ray sensor working above 10 keV, providing outstanding repeatability as good as 4 pm rms. Our sensors have demonstrated their high usefulness for the metrology of EUV to X-ray optics from single flat or curved mirrors to more complex optical systems (Schwarzschild, Kirkpatrick-Baez static or based on bender technology or with activators). In terms of optics qualification is a clear advantage of actually measuring the wavefront at-wavelength. Also, we show active Kirkpatrick-Baez alignment in few minutes using our WF sensor in both manual and automatic loops at the benefit of strong improvement of the beam focalization on the sample. Recently we started developing our own compact deformable grazing incidence mirror bender. We present a review of the developed sensors, as well as experimental demonstrations of their benefits for optical metrology of various EUV and X-ray optics.
Published: 2019
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11. Study on contrast variations with depth in focused plenoptic cameras

Author: Ombeline de La Rochefoucauld, Xavier Granier, Philippe Zeitoun, Charlotte Herzog, Fabrice Harms, Imagine Optic, Laboratoire Photonique, Numérique et Nanosciences (LP2N), Université de Bordeaux (UB)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Melting the frontiers between Light, Shape and Matter (MANAO), Laboratoire Bordelais de Recherche en Informatique (LaBRI), Université de Bordeaux (UB)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Centre National de la Recherche Scientifique (CNRS)-Inria Bordeaux - Sud-Ouest, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Photonique, Numérique et Nanosciences (LP2N), Université de Bordeaux (UB)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Archeovision CNRS, Université de Bordeaux (UB)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), European Project: 665207,H2020,H2020-FETOPEN-2014-2015-RIA,VOXEL(2015), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Inria Bordeaux - Sud-Ouest, CNRS Archéovision, and Université de Bordeaux (UB)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS)
Subjects: Diffraction, Magnification, media_common.quotation_subject, 02 engineering and technology, Defocus, 01 natural sciences, 010309 optics, Optics, Position (vector), Optical transfer function, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Contrast (vision), media_common, Physics, Plane (geometry), business.industry, 020207 software engineering, Contrast, Atomic and Molecular Physics, and Optics, Three dimensional imaging, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Spatial frequency, business, Focused Plenoptic Camera
Abstract: International audience; A focused plenoptic camera has the ability to record and separate spatial and directional information of the incoming light. Combined with the appropriate algorithm, 3D scene could be reconstructed from a single acquisition, over a depth range called plenoptic Depth-of-Field. In this article, we study the contrast variations with depth as a way to assess plenoptic Depth-of-Field. We take into account the impact of diffraction, defocus and, magnification on the resulting contrast. We measure the contrast directly on both simulated and acquired images. We confront our simulations with acquired data. We demonstrate the importance of diffraction and magnification in the final contrast. Contrary to classical optics, the maximum of contrast is not centered around the main object plane, but around a shifted position, with a fast and non-symmetric decrease of contrast.
Published: 2019
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12. Developments of EUV/x-ray wavefront sensors and adaptive optics at Imagine Optic

Author: Guillaume Dovillaire, Mourad Idir, Lionel Nicolas, Xavier Levecq, Philippe Zeitoun, Martin Piponnier, Dietmar Korn, Agathe Marmin, Fabrice Harms, Ombeline de La Rochefoucauld, Lorenzo Raimondi, Samuel Bucourt, and Daniele Cocco
Subjects: Wavefront, Physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Extreme ultraviolet lithography, Curved mirror, Laser, 7. Clean energy, 01 natural sciences, law.invention, Numerical aperture, Metrology, 010309 optics, Optics, law, Physics::Space Physics, 0103 physical sciences, High harmonic generation, 010306 general physics, business, Adaptive optics
Abstract: Imagine Optic (IO) is actively developing EUV to X-ray wavefront (WF) sensors since 2003 for applications on metrology of EUV to X-ray beams emitted by synchrotrons, free-electron lasers, plasma-based soft X-ray lasers and high harmonic generation. Our sensors have demonstrated their high usefulness for metrology of EUV to X-ray optics from single flat or curved mirrors to more complex optical systems (Schwarzschild, Kirkpatrick-Baez static or based on bender technology or with activators). Our most recent developments include the realization of a EUV sensor adapted to strongly convergent or divergent beams having numerical aperture as high as 0.15, as well as the production of a hard X-ray sensor working at 10 keV and higher energies, providing repeatability as good as 4 pm rms. We present a review of the developed sensors, as well as experimental demonstrations of their benefits for various metrology and WF optimization requirements.
Published: 2018
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13. Micro-focusing of broadband high-order harmonic radiation by a double toroidal mirror (Conference Presentation)

Author: Anne L'Huillier, Hélène Couderc-Alteirac, Philippe Zeitoun, Hugo Dacasa, and Piotr Rudawski
Subjects: Physics, Presentation, Optics, Toroid, business.industry, media_common.quotation_subject, Broadband, Harmonic radiation, High order, business, media_common
Published: 2018
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14. Compact metrology beamline for EUV optic and adaptive optic tests (Conference Presentation)

Author: Domenico Alj, Ombeline de La Rochefoucauld, Philippe Zeitoun, and Hugo Dacasa
Subjects: Wavefront, Physics, business.industry, Extreme ultraviolet lithography, Curved mirror, Laser, Collimated light, law.invention, Metrology, Optics, Beamline, law, business, Adaptive optics
Abstract: With the progresses achieved on the development of high quality, highly coherent soft X-ray (or EUV) sources from synchrotrons, free-electrons laser, high harmonics and plasma based soft X-ray laser, as well as for the need of always better optics for imaging (EUV lithography, EUV spatial telescopes, EUV microscopes), the demand on metrology is increasing very fast. Nowadays, many synchrotrons have developed metrology beamlines but with the limit of being too expensive and too large for transposing them to university-scale laboratories or optical firms. At Laboratoire d'Optique Appliquee, we have developed a compact and versatile metrology beamline to test at-wavelength different EUV optics, from single component to full assembly and adaptive optics. The beamline is based on the use of high harmonics generated by the interaction of a 35 fs, 4 kHz, 3 mJ laser with neutral gases. The high harmonics span from 10 to 50 nm and are fully coherent, collimated and exhibit a good wavefront of about lambda/5 rms. The beamline covers a footprint of about 5*1.5 m2 while the driving laser occupies about 4 m2. Itis composed of an interaction chamber where high harmonics are generated, a spectrometer and the metrology chamber (1.5m*0.7m) . We have tested many optical components from flat or curved mirrors to toroidal mirror or Schwarzschild microscope. We will present in detail the beamline as well as results from optic metrology. The beamline is also used for calibration of wavefront sensors. This beamline is well suited for testing EUV adaptive optic in any configurations.
Published: 2018
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15. Comparison of reconstruction approaches for plenoptic imaging systems

Author: Lois Mignard-Debise, Fabrice Harms, Charlotte Herzog, Elena Longo, Ombeline de La Rochefoucauld, Philippe Zeitoun, Xavier Levecq, Guillaume Dovillaire, Xavier Granier, Laboratoire Photonique, Numérique et Nanosciences (LP2N), Université de Bordeaux (UB)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Melting the frontiers between Light, Shape and Matter (MANAO), Laboratoire Bordelais de Recherche en Informatique (LaBRI), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Inria Bordeaux - Sud-Ouest, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Photonique, Numérique et Nanosciences (LP2N), Université de Bordeaux (UB)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Imagine Optic, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), European Project: 665207,H2020,H2020-FETOPEN-2014-2015-RIA,VOXEL(2015), and Université de Bordeaux (UB)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Centre National de la Recherche Scientifique (CNRS)-Inria Bordeaux - Sud-Ouest
Subjects: Image quality, Computer science, Detection and tracking algorithms, Refocusing, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, 02 engineering and technology, 01 natural sciences, law.invention, 010309 optics, Data acquisition, Image resolution, Position (vector), law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Imaging systems, Computer vision, Microlens array, Reconstruction algorithms, Unfocused Light-Field Camera, Microlens, Reconstruction algorithm, business.industry, Sensors, Detector, Cameras, Lens (optics), Plenoptic imaging, Focused Light-Field Camera, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, 020201 artificial intelligence & image processing, Artificial intelligence, business
Abstract: International audience; Plenoptic cameras provide single-shot 3D imaging capabilities, based on the acquisition of the Light-Field, which corresponds to a spatial and directional sampling of all the rays of a scene reaching a detector. Specific algorithms applied on raw Light-Field data allow for the reconstruction of an object at different depths of the scene.Two different plenoptic imaging geometries have been reported, associated with two reconstruction algorithms: the traditional or unfocused plenoptic camera, also known as plenoptic camera 1.0, and the focused plenoptic camera, also called plenoptic camera 2.0. Both systems use the same optical elements, but placed at different locations: a main lens, a microlens array and a detector. These plenoptic systems have been presented as independent. Here we show the continuity between them, by simply moving the position of an object. We also compare the two reconstruction methods. We theoretically show that the two algorithms are intrinsically based on the same principle and could be applied to any Light-Field data. However, the resulting images resolution and quality depend on the chosen algorithm.
Published: 2018
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16. Spectrally Resolved Spatial Interference for Single-Shot Temporal Metrology of Ultrashort Soft-X-Ray Pulses

Author: Philippe Zeitoun, Benoît Mahieu, Stéphane Sebban, Hugo Dacasa, and Julien Gautier
Subjects: Physics, business.industry, Streak, Phase (waves), Laser, Metrology, law.invention, Pulse (physics), Optics, Interference (communication), law, Harmonics, Temporal resolution, business
Abstract: Plasma-based soft-X-ray lasers seeded by high harmonics have only been temporally characterized using streak cameras, with a 1-ps temporal resolution. However, theoretical and experimental studies showed that sub-ps seeded soft-X-ray lasers are achievable. Existing methods do not provide enough information or require multiple shots, needing stable sources. In this work, we theoretically propose a single-shot method to characterize ultrashort soft-X-ray pulses, based on spectrally resolved spatial interference between an unknown pulse and a reference high-harmonic pulse. High harmonics have already been characterized, providing enough information to extract the unknown spectral phase from the 2D interferogram.
Published: 2018
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17. Non-contact XUV metrology of Ru/B 4 C multilayer optics by means of Hartmann wavefront analysis

Author: Lu Li, Hugo Dacasa, Magali Lozano, Davide Bleiner, Mabel Ruiz-Lopez, Benoît Mahieu, Philippe Zeitoun, Swiss Federal Laboratories for Materials Science and Technology [Dübendorf] (EMPA), Deutsches Elektronen-Synchrotron [Hamburg] (DESY), Laboratoire d'optique appliquée (LOA), and École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics - Instrumentation and Detectors, Materials science, FOS: Physical sciences, 01 natural sciences, 010309 optics, Optics, 0103 physical sciences, High harmonic generation, Electrical and Electronic Engineering, Engineering (miscellaneous), Lithography, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, Wavefront, [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Instrumentation and Detectors (physics.ins-det), Wavefront sensor, Atomic and Molecular Physics, and Optics, Metrology, Wavelength, Extreme ultraviolet, Reflection (physics), business, Optics (physics.optics), Physics - Optics
Abstract: Short-wavelength imaging, spectroscopy, and lithography scale down the characteristic length-scale to nano meters. This poses tight constraints on the optics finishing tolerances, which is often difficult to characterize. Indeed, even a tiny surface defect degrades the reflectivity and spatial projection of such optics. In this study, we demonstrate experimentally that a Hartmann wavefront sensor for extreme ultraviolet (XUV) wavelengths is an effective non-contact analytical method for inspecting the surface of multilayer optics. The experiment was carried out in a tabletop laboratory using a high-order harmonic generation as an XUV source. The wavefront sensor was used to measure the wavefront errors after the reflection of the XUV beam on a spherical Ru/B4C multilayer mirror, scanning a large surface of approximately 40 mm in diameter. The results showed that the technique detects the aberrations in the nanometer range., 6 pages, 4 figures
Published: 2018
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18. Optimization and Characterization of High-Harmonic Generation for Probing Solid Density Plasmas

Author: Barbara Keitel, João Dias, Victor Hariton, Marta Fajardo, Gareth O. Williams, Thomas Wodzinski, Joana Duarte, Jayanath Koliyadu, Philippe Zeitoun, Nuno Gomes, Mario Galletti, Nelson Lopes, Celso P. João, Hugo Pires, Gonçalo Figueira, S. Künzel, Elke Plönjes, Instituto de Plasmas e Fusão Nuclear [Lisboa] (IPFN), Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Portuguese Fundacao para a Ciencia e a Tecnologia (FCT) SFRH/BH/52419/2013, Portuguese Fundacao para a Ciencia e a Tecnologia (FCT) SFRH/BD/68865/2010, Portuguese Fundacao para a Ciencia e a Tecnologia (FCT) IF/01122/2013-CP1163/CT0006, COST Action MP1203, European Project: 284464,EC:FP7:INFRA,FP7-INFRASTRUCTURES-2011-1,LASERLAB-EUROPE(2012), and European Project: 20142018,Euroatom
Subjects: Photon, chemistry.chemical_element, Physics::Optics, XUV, high-harmonic generation, high energy density physics, diode-pumped lasers, pump-probe, 01 natural sciences, 7. Clean energy, law.invention, 010309 optics, Optics, Xenon, law, Physics::Plasma Physics, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, Physics::Atomic and Molecular Clusters, High harmonic generation, Radiology, Nuclear Medicine and imaging, ddc:530, 010306 general physics, Absorption (electromagnetic radiation), Instrumentation, Settore FIS/01, Wavefront, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Settore FIS/03, business.industry, Settore FIS/07, Plasma, Laser, Atomic and Molecular Physics, and Optics, 3. Good health, chemistry, Extreme ultraviolet, business
Abstract: International audience; The creation of high energy density plasma states produced during laser-solid interaction on a sub-picosecond timescale opens a way to create astrophysical plasmas in the lab to investigate their properties, such as the frequency-dependent refractive index. Available probes to measure absorption and phase-changes given by the complex refractive index of the plasma state are extreme-UV (EUV) and soft X-ray (XUV) ultra-short pulses from high harmonic generation (HHG). For demanding imaging applications such as single-shot measurements of solid density plasmas, the HHG probe has to be optimized in photon number and characterized in intensity and wavefront stability from shot-to-shot. In an experiment, a coherent EUV source based on HHG driven by a compact diode-pumped laser is optimized in photons per pulse for argon and xenon, and the shot-to-shot intensity stability and wavefront changes are characterized. The experimental results are compared to an analytical model estimating the HHG yield, showing good agreement. The obtained values are compared to available data for solid density plasmas to confirm the feasibility of HHG as a probe.
Published: 2017
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19. Ultrafast Dynamics of Magnetic Domain Structures Probed by Coherent Free-Electron Laser Light

Author: Emanuele Pedersoli, C. M. Günther, Rolf Treusch, Fausto Sirotti, Nathan Beaulieu, Gregory Malinowski, Maya Kiskinova, A. Al-Shemmary, Hans Peter Oepen, Bastian Pfau, Philippe Zeitoun, Stefan Eisebitt, Stefan Düsterer, Nicolas Jaouen, S. Schleitzer, Boris Vodungbo, K. Li, C. von Korff Schmising, S. Schaffert, Michael Schneider, Harald Redlin, Felix Büttner, Flavio Capotondi, Bharati Tudu, Horia Popescu, Leonard Müller, Victor Lopez-Flores, Jan Geilhufe, Julien Gautier, J. Bach, Christian Gutt, Gerhard Grübel, Jan Lüning, Robert Frömter, Deutsches Elektronen-Synchrotron [Hamburg] (DESY), Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (MBI), Technische Universität Berlin (TU), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (Helmholtz-Zentrum Berlin), Helmholtz-Zentrum Berlin, Paul Scherrer Institute (PSI), NEST-INFM (INFM), Istituto Nazionale di Fisica Nucleare (INFN), Institut für Angewandte Physik [Hamburg] (IAngPh), Universität Hamburg (UHH), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), European Synchrotron Radiation Facility (ESRF), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, and Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Subjects: Nuclear and High Energy Physics, Magnetic domain, Magnetism, Astrophysics::High Energy Astrophysical Phenomena, 02 engineering and technology, 01 natural sciences, law.invention, Optics, law, 0103 physical sciences, ddc:530, 010306 general physics, ComputingMilieux_MISCELLANEOUS, Physics, Magnetic circular dichroism, business.industry, Scattering, Free-electron laser, 021001 nanoscience & nanotechnology, Laser, Atomic and Molecular Physics, and Optics, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Physics::Accelerator Physics, Atomic physics, 0210 nano-technology, business, Ultrashort pulse, Fermi Gamma-ray Space Telescope
Abstract: Synchrotron radiation news 26(6), 27 - 32 (2013). doi:10.1080/08940886.2013.850384, The free-electron laser (FEL) sources FLASH in Hamburg, LCLS at Stanford, and FERMI in Trieste provide XUV to soft X-ray radiation (FLASH and FERMI) or soft to hard X-ray radiation (LCLS) with unprecedented parameters in terms of ultrashort pulse length, high photon flux, and coherence. These properties make FELs ideal tools for studying ultrafast dynamics in matter on a previously unaccessible level. This paper first reviews results obtained at FEL sources during the last few years in the field of magnetism research. We start with pioneering experiments at FLASH demonstrating the feasibility of magnetic scattering at FELs [1, 2], then present pump–probe scattering experiments [3, 4] as well as the first FEL magnetic imaging experiments [5], and finally discuss a limitation of the scattering methods due to a quenching of the magnetic scattering signal by high-fluence FEL pulses [6]. All of the presented experiments exploit the X-ray magnetic circular dichroism effect [7, 8] to obtain element-specific magnetic scattering contrast, as known from synchrotron experiments [9–12]., Published by Taylor & Francis, Philadelphia, Pa.
Published: 2013
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20. Micro-Focusing of Broadband High-Order Harmonic Radiation by a Double Toroidal Mirror

Author: Hugo Dacasa, Emma Kueny, B. Farkas, Hélène Coudert-Alteirac, Jan Lahl, Anne L'Huillier, Linnea Rading, Sylvain Maclot, Guillaume Dovillaire, Katalin Varjú, Filippo Campi, Fabian Brunner, Balázs Major, Per Johnsson, Jasper Peschel, Philippe Zeitoun, Piotr Rudawski, Hampus Wikmark, Bastian Manschwetus, Laboratoire d'optique appliquée (LOA), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'optique appliquée ( LOA ), and École Nationale Supérieure de Techniques Avancées ( Univ. Paris-Saclay, ENSTA ParisTech ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Physics - Instrumentation and Detectors, ultrafast nonlinear optics, high-order harmonic generation, extreme ultraviolet, XUV focusing, wavefront sensing, attosecond pulses, 01 natural sciences, lcsh:Technology, lcsh:Chemistry, General Materials Science, Instrumentation, [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], lcsh:QH301-705.5, Fluid Flow and Transfer Processes, Physics, General Engineering, Instrumentation and Detectors (physics.ins-det), lcsh:QC1-999, Computer Science Applications, Full width at half maximum, Harmonics, Physics - Optics, FOS: Physical sciences, Radiation, 010309 optics, Optics, 0103 physical sciences, [ PHYS.PHYS.PHYS-GEN-PH ] Physics [physics]/Physics [physics]/General Physics [physics.gen-ph], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Wavefront, Toroid, business.industry, lcsh:T, Process Chemistry and Technology, Wavefront sensor, [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph], lcsh:Biology (General), lcsh:QD1-999, lcsh:TA1-2040, Extreme ultraviolet, business, Focus (optics), lcsh:Engineering (General). Civil engineering (General), ddc:600, lcsh:Physics, Optics (physics.optics)
Abstract: Applied Sciences 7(11), 1159 (2017). doi:10.3390/app7111159, We present an optical system based on two toroidal mirrors in a Wolter configuration to focus broadband extreme ultraviolet (XUV) radiation. Optimization of the focusing optics alignment is carried out with the aid of an XUV wavefront sensor. Back-propagation of the optimized wavefront to the focus yields a focal spot of 3.6 × 4.0 $\mu$m$^2$ full width at half maximum, which is consistent with ray-tracing simulations that predict a minimum size of 3.0 × 3.2 $\mu$m$^2$. This work is important for optimizing the intensity of focused high-order harmonics in order to reach the nonlinear interaction regime., Published by MDPI, Basel
Published: 2017
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21. Chirped pulse amplification in an extreme-ultraviolet free-electron laser

Author: P. A. Walker, Miltcho B. Danailov, Primož Rebernik Ribič, Sebastian Schulz, Cristian Svetina, David Gauthier, Carlo Callegari, Bruno Diviacco, Philippe Zeitoun, Marta Fajardo, Marcello Coreno, Nicola Mahne, Benoît Mahieu, Robert Richter, Tommaso Mazza, Hugo Dacasa, Alexander Demidovich, Eugenio Ferrari, Mauro Trovò, S. Künzel, Eléonore Roussel, Paolo Miotti, Giuseppe Penco, Simone Di Mitri, Lorenzo Raimondi, Michael Meyer, Giovanni De Ninno, Enrico Allaria, David Garzella, L. Sturari, Luca Giannessi, Marco Zangrando, Paola Finetti, Vincent Leroux, Fabio Frassetto, Ivan Cudin, Luca Poletto, Elettra Sincrotrone Trieste, Istituto di Struttura della Materia (CNR-ISM), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), CNR Inst Photon & Nanotechnol, Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDyl), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Instituto de Plasmas e Fusão Nuclear [Lisboa] (IPFN), Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), Univ Hambourg, Ctr Free Electron Laser Sci, Univ Hamburg, dept Phys, ELI Beamlines, European XFEL GmbH (XFEL), European XFEL GmbH, Max Planck Institute for the Structure and Dynamics of Matter (MPSD), CNR Istituto Officina dei Materiali (IOM), Italian National agency for new technologies, Energy and sustainable economic development [Frascati] (ENEA), Laboratory of Quantum Optics, University of Nova Gorica, LabEx PALM RAMSES project - COST MP 1203, Triangle de la physique, European Union - 654148, Fundacao para a Ciencia e a Tecnologia - IF/01122/2013, BMBF - 05K13GU5, and Consiglio Nazionale delle Ricerche [Roma] (CNR)
Subjects: Chirped pulse amplification, Femtosecond pulse shaping, Genetics and Molecular Biology (all), Science, General Physics and Astronomy, Physics::Optics, 01 natural sciences, Biochemistry, General Biochemistry, Genetics and Molecular Biology, Article, law.invention, 010309 optics, COHERENT, Physics and Astronomy (all), Optics, PROPOSAL, Ultrafast photonics, law, Free-electron lasers, 0103 physical sciences, Ultrafast laser spectroscopy, Physics::Atomic Physics, 010306 general physics, FEL, [PHYS]Physics [physics], Water window, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Multidisciplinary, business.industry, Chemistry (all), Free-electron laser, General Chemistry, Laser, Femtosecond, RADIATION, COMPRESSION, Biochemistry, Genetics and Molecular Biology (all), business, Ultrashort pulse
Abstract: Chirped pulse amplification in optical lasers is a revolutionary technique, which allows the generation of extremely powerful femtosecond pulses in the infrared and visible spectral ranges. Such pulses are nowadays an indispensable tool for a myriad of applications, both in fundamental and applied research. In recent years, a strong need emerged for light sources producing ultra-short and intense laser-like X-ray pulses, to be used for experiments in a variety of disciplines, ranging from physics and chemistry to biology and material sciences. This demand was satisfied by the advent of short-wavelength free-electron lasers. However, for any given free-electron laser setup, a limit presently exists in the generation of ultra-short pulses carrying substantial energy. Here we present the experimental implementation of chirped pulse amplification on a seeded free-electron laser in the extreme-ultraviolet, paving the way to the generation of fully coherent sub-femtosecond gigawatt pulses in the water window (2.3–4.4 nm)., Short laser pulses of femtosecond time scales are in high demand in order to explore the fast electron dynamics in light-matter interactions. Here, the authors demonstrated the compression of free electron laser pulses in the extreme ultraviolet range by using a chirped pulse amplification technique.
Published: 2016
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22. OPT2X: Optimizing XUV optical pulses for ultrafast science in Paris-Saclay

Author: Bertrand Carré, Rodrigo Lopez-Martens, David Garzella, David Dennetières, Jean-Michel Mestdagh, Philippe Zeitoun, C. Spezzani, Maël Delhinger, Marino Marsi, François Polack, Stefan Haessler, Julien Lenfant, Lionel Poisson, Danielle Dowekon, Thierry Ruchon, Sophie Kazamias, Franck Delmotte, Laurent Nahon, and Annie Klisnick
Subjects: Engineering, Optics, business.industry, Cross disciplinary, Extreme ultraviolet, Synchrotron radiation, business, Ultrashort pulse, Characterization (materials science)
Abstract: OPT2X gathers researchers of the newly formed Paris-Saclay University with the goal of building an instrumental platform dedicated to the control, characterization and transport of ultra-short coherent XUV light pulses, in view of cross disciplinary applications in ultrafast science
Published: 2016
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23. Table-top femtosecond soft X-ray laser by collisional ionization gating

Author: G. Iaquaniello, Hyung Taek Kim, A. Tafzi, Eduardo Oliva, Philippe Zeitoun, Antoine Rousse, Guillaume Lambert, K. Ta Phuoc, T. Lefrou, Jean-Philippe Goddet, Fabien Tissandier, Julien Gautier, Pascal Rousseau, Boris Vodungbo, Jaroslav Nejdl, Michaela Kozlova, Gilles Maynard, Cédric Thaury, Agustin Lifschitz, A. Depresseux, Victor Malka, Alessandro Flacco, Stéphane Sebban, S. Jacquemot, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Czech Academy of Sciences [Prague] (CAS), Sources compactes de Particules pour Lasers & Applications (SPL), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Gwangju Institute of Science and Technology (GIST), IBS, Ctr Relativist Laser Sci, Gwangju 500712, South Korea, IBS, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut des Nanosciences de Paris (INSP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), and ANR-10-EQPX-0025,CILEX,Centre Interdisciplinaire Lumière Extrême(2010)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, business.industry, Infrared, Electron, Plasma, Laser, 01 natural sciences, PULSE, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, 010309 optics, COHERENT, Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Ionization, Picosecond, 0103 physical sciences, Femtosecond, 010306 general physics, business, Ultrashort pulse
Abstract: International audience; The advent of X-ray free-electron lasers has granted researchers an unprecedented access to theultrafast dynamics of matter on the nanometre scale(1-3). Aside from being compact, seededplasma-based soft X-ray lasers (SXRLs) turn out to be enticing as photon-rich(4) sources (up to 10(15)per pulse) that display high-quality optical properties(5,6). Hitherto, the duration of these sources waslimited to the picosecond range(7), which consequently restricts the field of applications. This bottleneckwas overcome by gating the gain through ultrafast collisional ionization in a high-density plasmagenerated by an ultraintense infrared pulse (a few 10(18) W cm(-2)) guided in an optically pre-formedplasma waveguide. For electron densities that ranged from 3 x 10(18) cm(-3) to 1.2 x 10(20) cm(-3), thegain duration was measured to drop from 7 ps to an unprecedented value of about 450 fs, which pavesthe way to compact and ultrafast SXRL beams with performances previously only accessible inlarge-scale facilities.
Published: 2015
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24. Wave Front Study of Fully Coherent Soft X-Ray Laser Using Hartmann Sensor

Author: Liang Yin, Gilles Maynard, Eduardo Oliva, Stéphane Sebban, T. T. T. Le, Jorge J. Rocca, David Ros, Yong Wang, Philippe Zeitoun, Shoujun Wang, and Lu Li
Subjects: Electromagnetic field, Wavefront, Brightness, Materials science, business.industry, Amplifier, Laser, law.invention, Intensity (physics), Optics, law, Harmonics, Seeding, business
Abstract: Fully coherent soft x-ray laser (SXRL) was achieved seeding high harmonics (HH) seed into a solid-plasma amplifier. Wave front of both HH seed and amplified seed were measured using Hartmann wave front sensor. Wave front root-mean-square (RMS) value and stability were observed with improvement of more than two times. In terms of wave front quality, optimized HH seeding parameters on injection time, injection angle and plasma length were discussed. With the benefit of the intensity and phase detection, electromagnetic field of HH seed and amplified seed beam were studied by back-propagation. The reconstructed SXRL source confirmed its high peak brightness.
Published: 2015
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25. Chirped pulse amplification in X-ray free-electron lasers

Author: Philippe Zeitoun, Thuy T. T. Le, Eduardo Oliva, Benoît Mahieu, Marta Fajardo, Lu Li, Hugo Dacasa, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Inst Super Tecn, GoLP Inst Plasmas & Fusao Nucl, School of Mathematics and Physics, Queen’s University Belfast, Belfast, and Univ Politecn Madrid, ETS Ingenieros Ind, Inst Fusin Nucl, C Jose Gutierrez Abascal 2, E-28006 Madrid, Spain (IIFN)
Subjects: Physics, Chirped pulse amplification, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, extreme ultraviolet, Physics::Optics, Laser, law.invention, X-ray, Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Extreme ultraviolet, Free-electron lasers, Femtosecond, Chirp, Optoelectronics, High harmonic generation, Physics::Accelerator Physics, Chirped Pulse Amplification, Spontaneous emission, business, Ultrashort pulse, conical diffraction, seeding
Abstract: International audience; X-ray free-electron lasers (FELs) are powerful tools for probing matter properties down to sub-nanometer scales with femtosecond time resolution, allowing a growing number of physical, chemical, biological and medical investigations to be carried out. FELs operating in seeding mode intrinsically present enhanced temporal coherence properties with respect to those relying on the self-amplified spontaneous emission (SASE) process. They are however limited, for the moment, to extreme ultraviolet (XUV) wavelengths, or in some cases to soft X-rays, and durations of tens of femtoseconds. We studied how these limits can be overcome by means of X-ray chirped pulse amplification, inspired by infrared lasers.As a matter of fact, the use of a seed enables a fine control of the chirp and a spectro-temporal shaping of the FEL emission. Moreover, ultrashort wavelengths can be envisaged through schemes of high-gain harmonic generation and echo-enabled harmonic generation. We will present FEL simulations coupled with the study of a compressor in conical diffraction geometry.
Published: 2015
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26. A high-intensity highly coherent soft X-ray femtosecond laser seeded by a high harmonic beam

Author: D. Aubert, Gabriel Faivre, Philippe Balcou, Stéphane Sebban, Marta Fajardo, Tomas Mocek, G. de Lacheze-Murel, Sophie Kazamias, Frédéric Burgy, Hamed Merdji, A. Hallou, T. Lefrou, S. Le Pape, Denis Douillet, Anne-Sophie Morlens, Philippe Zeitoun, Jean-Philippe Rousseau, Constance Valentin, Pascal Mercère, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centro de Física dos Plasmas, Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Service des Photons, Atomes et Molécules (SPAM), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Soft x ray, Multidisciplinary, Materials science, business.industry, Amplifier, Nonlinear optics, Plasma, Laser, 01 natural sciences, Optical quality, law.invention, 010309 optics, Optics, law, 0103 physical sciences, Femtosecond, Optoelectronics, 010306 general physics, business, Coherence (physics)
Abstract: International audience; Synchrotrons have for decades provided invaluable sources of soft X-rays, the application of which has led to significant progress in many areas of science and technology. But future applications of soft X-rays—in structural biology, for example—anticipate the need for pulses with much shorter duration (femtoseconds) and much higher energy (millijoules) than those delivered by synchrotrons. Soft X-ray free-electron lasers1 should fulfil these requirements but will be limited in number; the pressure on beamtime is therefore likely to be considerable. Laser-driven soft X-ray sources offer a comparatively inexpensive and widely available alternative, but have encountered practical bottlenecks in the quest for high intensities. Here we establish and characterize a soft X-ray laser chain that shows how these bottlenecks can in principle be overcome. By combining the high optical quality available from high-harmonic laser sources (as a seed beam) with a highly energetic soft X-ray laser plasma amplifier, we produce a tabletop soft X-ray femtosecond laser operating at 10 Hz and exhibiting full saturation, high energy, high coherence and full polarization. This technique should be readily applicable on all existing laser-driven soft X-ray facilities.
Published: 2004
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27. Towards enabling femtosecond helicity-dependent spectroscopy with high-harmonic sources

Author: Marta Fajardo, S. Stremoukhov, Stéphane Sebban, Philippe Zeitoun, Boris Vodungbo, A. Dax, A. Sardinha, F. Ardana-Lamas, J. Perron, Julien Gautier, A. Andreev, Christoph P. Hauri, Victor Malka, Guillaume Lambert, Benoît Mahieu, Jan Lüning, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Faculty of Physics [MSU, Moscow], Lomonosov Moscow State University (MSU), Ecole Polytechnique Fédérale de Lausanne (EPFL), Paul Scherrer Institute (PSI), Centro de Física dos Plasmas, Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), and Instituto de Telecomunicações [Lisboa, Portugal]
Subjects: [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], General Physics and Astronomy, Elliptical polarization, 01 natural sciences, 7. Clean energy, General Biochemistry, Genetics and Molecular Biology, 010309 optics, Optics, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, High harmonic generation, 010306 general physics, Physics, [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Multidisciplinary, business.industry, Magnetic circular dichroism, Linear polarization, General Chemistry, Computational physics, Harmonics, Femtosecond, Harmonic, business, Ultrashort pulse
Abstract: International audience; Recent advances in high-harmonic generation gave rise to soft X-ray pulses with higher intensity, shorter duration and higher photon energy. One of the remaining shortages of this source is its restriction to linear polarization, since the yield of generation of elliptically polarized high harmonics has been low so far. We here show how this limitation is overcome by using a cross-polarized two-colour laser field. With this simple technique, we reach high degrees of ellipticity (up to 75%) with efficiencies similar to classically generated linearly polarized harmonics. To demonstrate these features and to prove the capacity of our source for applications, we measure the X-ray magnetic circular dichroism (XMCD) effect of nickel at the M2,3 absorption edge around 67 eV. There results open up the way towards femtosecond time-resolved experiments using high harmonics exploiting the powerful element-sensitive XMCD effect and resolving the ultrafast magnetization dynamics of individual components in complex materials.
Published: 2015
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28. Shot-to-shot intensity and wavefront stability of high-harmonic generation

Author: S. Künzel, Marta Fajardo, Guillaume Dovillaire, Philippe Zeitoun, Hamed Merdji, Bob Nagler, Ulf Zastrau, Willem Boutu, B. Barbrel, Hae Ja Lee, Eric Galtier, Gareth O. Williams, Richard W. Lee, Instituto de Telecomunicações [Lisboa, Portugal], Service des Photons, Atomes et Molécules (SPAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), SLAC National Accelerator Laboratory (SLAC), Stanford University, Lawrence Berkeley National Laboratory [Berkeley] (LBNL), Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany], Imagine Optic, AFOP, Department of Psychics, Laboratoire d'optique appliquée (LOA), and École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Wavefront, Physics, Spectrometer, [PHYS.PHYS]Physics [physics]/Physics [physics], business.industry, Phase (waves), Wavefront sensor, Atomic and Molecular Physics, and Optics, Intensity (physics), Optics, Temporal resolution, High harmonic generation, Plasma diagnostics, Electrical and Electronic Engineering, business, Engineering (miscellaneous)
Abstract: International audience; We report on the shot-to-shot stability of intensity and spatial phase of high-harmonic generation (HHG). The intensity stability is measured for each high-harmonic (HH) order with a spectrometer. Additionally, the spatial phase is measured with an XUV wavefront sensor for a single HH order measured in a single shot, which according to our knowledge was not reported before with a Hartmann wavefront sensor. Furthermore, we compare the single-shot measurement of the spatial phase with time-integrated measurements and we show that the XUV wavefront sensor is a useful tool to simultaneously optimize the spatial phase and intensity of HHG within the available HHG parameter range used in this study.
Published: 2015
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29. Double-stage soft x-ray laser pumped by multiple pulses applied in grazing incidence

Author: David Ros, S. Daboussi, Bastian Aurand, T. T. T. Le, Philippe Zeitoun, Sophie Kazamias, Bernhard Zielbauer, Paul Neumayer, Q. Jin, B. Ecker, Eduardo Oliva, Lianhe Li, O. Guilbaud, Huxian Zhao, Kevin Cassou, Thomas Kuehl, D. C. Hochhaus, Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Helmholtz-Institut Jena, Heinrich Heine Universität Düsseldorf = Heinrich Heine University [Düsseldorf], ExtreMe Matter Institute (EMMI), Goethe-Universität Frankfurt am Main, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institute of Modern Physics, Chinese Academy of Sciences, Laboratoire de physique des gaz et des plasmas (LPGP), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [PHYS]Physics [physics], Photon, business.industry, Condensed Matter Physics, Laser, 7. Clean energy, Atomic and Molecular Physics, and Optics, law.invention, Ion, Optics, law, Harmonic, ddc:530, Spectroscopy, business, Excitation, Order of magnitude, Storage ring
Abstract: International audience; In this paper we report on results obtained with a compact double-stage molybdenum x-ray laser (XRL), operated with a total pump energy of 600 mJ. The two gain regions were pumped using the double-pulse grazing incidence pumping technique, which includes travelling wave excitation for both the seed- and the amplifier-target. In addition, the influence of an additional pre-pulse has been studied. Seeded XRL operation has been demonstrated in both schemes, resulting in XRL pulses with a divergence of 2 × 2 mrad. The peak brilliance of the amplified XRL of 4 × 10^23 photons/s/mm2/mrad2 in 5 × 10^−5 relative bandwidth was more than two orders of magnitude larger compared to the original seed pulses. The presented experimental concept provides an alternative approach to the currently more common use of high-order harmonic pulses as a seed source, well suited for applications like laser spectroscopy of highly-charged ions at a storage ring.
Published: 2015
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30. Spectral-phase interferometry for direct electric-field reconstruction applied to seeded extreme-ultraviolet free-electron lasers

Author: David Garzella, Jean-Philippe Rousseau, Hamed Merdji, Benoît Mahieu, Hugo Dacasa, David Gauthier, Magali Lozano, Philippe Zeitoun, Giovanni De Ninno, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Elettra Sincrotrone Trieste, Serveurs Laser (SLIC), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDyl), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDyl), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Attophysique (ATTO)
Subjects: [PHYS]Physics [physics], Materials science, business.industry, Phase (waves), FOS: Physical sciences, Laser, Spectral phase interferometry for direct electric-field reconstruction, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, 010309 optics, Interferometry, Optics, law, Extreme ultraviolet, Electric field, 0103 physical sciences, Femtosecond, High harmonic generation, Physics::Accelerator Physics, 010306 general physics, business, Physics - Optics, Optics (physics.optics)
Abstract: International audience; We present a setup for complete characterization of femtosecond pulses generated by seeded free-electron lasers (FELs) in the extreme-ultraviolet spectral region. Two delayed and spectrally shifted replicas are produced and used for spectral phase interferometry for direct electric field reconstruction (SPIDER). We show that it can be achieved by a simple arrangement of the seed laser. Temporal shape and phase obtained in FEL simulations are well retrieved by SPIDER reconstructions, allowing to foresee the implementation of this diagnostics tool on existing and future sources. This will be a significant step towards an experimental investigation and control of FEL spectral phase.
Published: 2015
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31. Spatial properties of odd and even low order harmonics generated in gas

Author: A. Andreev, S. Stremoukhov, Stéphane Sebban, Philippe Zeitoun, Guillaume Lambert, Victor Malka, Boris Vodungbo, Fabien Tissandier, Julien Gautier, Luca Giannessi, A. Petralia, Petralia, A., Giannessi, L., Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Faculty of Physics [MSU, Moscow], Lomonosov Moscow State University (MSU), ENEA C.R. Frascati, Via E. Fermi, 45, 00044 Frascati, Roma, Italy, and affiliation inconnue
Subjects: Computer science, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Bioinformatics, 01 natural sciences, Article, law.invention, 010309 optics, Optics, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], law, 0103 physical sciences, High harmonic generation, 010306 general physics, [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Multidisciplinary, business.industry, Order (ring theory), Filter (signal processing), Laser, Spatial coherence, Harmonics, Femtosecond, Harmonic, business, Intensity (heat transfer)
Abstract: High harmonic generation in gases is developing rapidly as a soft X-ray femtosecond light-source for applications. This requires control over all the harmonics characteristics and in particular, spatial properties have to be kept very good. In previous literature, measurements have always included several harmonics contrary to applications, especially spectroscopic applications, which usually require a single harmonic. To fill this gap, we present here for the first time a detailed study of completely isolated harmonics. The contribution of the surrounding harmonics has been totally suppressed using interferential filtering which is available for low harmonic orders. In addition, this allows to clearly identify behaviors of standard odd orders from even orders obtained by frequency-mixing of a fundamental laser and of its second harmonic. Comparisons of the spatial intensity profiles, of the spatial coherence and of the wavefront aberration level of 5ω at 160 nm and 6ω at 135 nm have then been performed. We have established that the fundamental laser beam aberrations can cause the appearance of a non-homogenous donut-shape in the 6ω spatial intensity distribution. This undesirable effect can be easily controlled. We finally conclude that the spatial quality of an even harmonic can be as excellent as in standard generation.
Published: 2015
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32. Control of the Polarization of a Vacuum-Ultraviolet, High-Gain, Free-Electron Laser

Author: Joern Seltmann, Jens Buck, Miltcho B. Danailov, Cesare Grazioli, Jens Viefhaus, David Gauthier, W. M. Fawley, P. Rebernik, Eugenio Ferrari, Giuseppe Penco, P. Gessler, Luca Giannessi, Marco Zangrando, Simone Di Mitri, Guillaume Lambert, Paola Finetti, Oksana Plekan, Giovanni De Ninno, Antti Kivimäki, Alberto De Fanis, Enrico Allaria, Michael Meyer, Bruno Diviacco, Flavio Capotondi, Stefan Moeller, Philippe Zeitoun, Markus Ilchen, Jan Lüning, Frank Scholz, Alexander Demidovich, André Knie, Lorenzo Raimondi, Boris Vodungbo, Nicola Mahne, Jan Grünert, Mauro Trovò, Julien Gautier, Tommaso Mazza, Barbara Ressel, Benoît Mahieu, Emanuele Pedersoli, A. Abrami, Ivaylo Nikolov, Cristian Svetina, Carlo Callegari, Marcello Coreno, Leif Glaser, Carlo Spezzani, Sincrotrone Trieste, Centre de Recherche en Cancérologie de Marseille (CRCM), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Aix Marseille Université (AMU), Laboratorio TASC, Istituto Nazionale di Fisica Nucleare (INFN), School of Applied Sciences, University of Nova Gorica, Laboratoire de Sociologie et d'Anthropologie - UFC (EA 3189) (LASA), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), CNR Istituto Officina dei Materiali (IOM), Consiglio Nazionale delle Ricerche [Roma] (CNR), Synchrotron ELETTRA, Elettra Sincrotrone Trieste, Infectious Diseases, Ospedali Galliera, EDF (EDF), CNR-IMIP, CNR-IOM, Institute for Forest Genetics and Forest Tree Breeding, Federal Research Centre for Forestry and Forest Products, German Weather Service, European XFEL GmbH, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University [Sendai], Institute of Physics and CINSaT, University of Kassel, Center for Magnetic Resonance Research [Minneapolis] (CMRR), University of Minnesota Medical School, University of Minnesota System-University of Minnesota System, NEST-INFM (INFM), Dipartimento di Scienze Fisiche, Informatiche e Matematiche [Modena], Università degli Studi di Modena e Reggio Emilia (UNIMORE), Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University, MRC Centre for Neuropsychiatric Genetics and Genomics, Medical Research Council (MRC)-School of Medicine [Cardiff], Institute of Medical Genetics [Cardiff]-Cardiff University-Institute of Medical Genetics [Cardiff]-Cardiff University, Centre de Recherche des Cordeliers (CRC), Université Paris Diderot - Paris 7 (UPD7)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Italian National agency for new technologies, Energy and sustainable economic development [Frascati] (ENEA), Centre de Recherche en Cancérologie de Marseille ( CRCM ), Aix Marseille Université ( AMU ) -Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), National Institute for Nuclear Physics ( INFN ), Laboratoire de Sociologie et d'Anthropologie - UFC (EA 3189) ( LASA ), Université Bourgogne Franche-Comté [COMUE] ( UBFC ) -Université de Franche-Comté ( UFC ), Laboratoire d'optique appliquée ( LOA ), École Nationale Supérieure de Techniques Avancées ( Univ. Paris-Saclay, ENSTA ParisTech ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), CNR - Istituto Officina dei Materiali ( IOM ), Consiglio Nazionale delle Ricerche [Roma] ( CNR ), ELETTRA Sincrotrone Trieste, EDF ( EDF ), Center for Magnetic Resonance Research [Minneapolis] ( CMRR ), NEST-INFM ( INFM ), Dipartimento di Fisica, Universit`a di Modena e Reggio Emilia, Cardiff University School of Medicine, Cardiff University-Medical Research Council (MRC), Centre de Recherche des Cordeliers ( CRC ), Université Paris Diderot - Paris 7 ( UPD7 ) -École pratique des hautes études ( EPHE ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Laboratoire de Chimie Physique - Matière et Rayonnement ( LCPMR ), Centre National de la Recherche Scientifique ( CNRS ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ), Italian National agency for new technologies, Energy and sustainable economic development [Frascati] ( ENEA ), Giannessi, L., Deutsches Elektronen-Synchrotron [Hamburg] (DESY), Laboratorio TASC (IOM CNR), Consiglio Nazionale delle Ricerche (CNR), Laboratory of Quantum Optics, Dipartimento di Fisica [Trieste], Università degli studi di Trieste = University of Trieste, European XFEL Gmbh, Stanford Pulse Institute, Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Graduate School of Nanotechnology, Instituto di Struttura della Materia (ISM), SLAC National Accelerator Laboratory (SLAC), Stanford University, National Institute for Nuclear Physics (INFN), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université de Franche-Comté (UFC), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris), Université Paris Diderot - Paris 7 (UPD7)-École pratique des hautes études (EPHE)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Allaria, Enrico, Diviacco, Bruno, Callegari, Carlo, Finetti, Paola, Mahieu, Benoît, Viefhaus, Jen, Zangrando, Marco, DE NINNO, Giovanni, Lambert, Guillaume, Ferrari, Eugenio, Buck, Jen, Ilchen, Marku, Vodungbo, Bori, Mahne, Nicola, Svetina, Cristian, Spezzani, Carlo, Di Mitri, Simone, Penco, Giuseppe, Trovò, Mauro, Fawley, William M., Rebernik, Primoz R., Gauthier, David, Grazioli, Cesare, Coreno, Marcello, Ressel, Barbara, Kivimäki, Antti, Mazza, Tommaso, Glaser, Leif, Scholz, Frank, Seltmann, Joern, Gessler, Patrick, Grünert, Jan, De Fanis, Alberto, Meyer, Michael, Knie, André, Moeller, Stefan P., Raimondi, Lorenzo, Capotondi, Flavio, Pedersoli, Emanuele, Plekan, Oksana, Danailov, Miltcho B., Demidovich, Alexander, Nikolov, Ivaylo, Abrami, Alessandro, Gautier, Julien, Lüning, Jan, Zeitoun, Philippe, Giannessi, Luca, Aix Marseille Université ( AMU ) -Institut Paoli-Calmettes-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Sociologie et d'Anthropologie - UFC ( LASA ), Université Bourgogne Franche-Comté ( UBFC ) -Université de Franche-Comté ( UFC ), Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Paris Descartes - Paris 5 ( UPD5 ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -École pratique des hautes études ( EPHE ) -Université Paris Diderot - Paris 7 ( UPD7 ), and Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Particles and field, QC1-999, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], General Physics and Astronomy, Radiation, law.invention, Physics and Astronomy (all), Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], ddc:530, [ PHYS.PHYS.PHYS-ACC-PH ] Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Photonics, Particles and fields, Interdisciplinary physics, Physics, [PHYS]Physics [physics], Interdisciplinary physic, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS ] Physics [physics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Free-electron laser, Photonic, Polarimeter, [ PHYS.PHYS.PHYS-PLASM-PH ] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Polarization (waves), Laser, Wavelength, business, Fermi Gamma-ray Space Telescope
Abstract: International audience; The two single-pass, externally seeded free-electron lasers (FELs) of the FERMI user facility are designed around Apple-II-type undulators that can operate at arbitrary polarization in the vacuum ultraviolet-to-soft x-ray spectral range. Furthermore, within each FEL tuning range, any output wavelength and polarization can be set in less than a minute of routine operations. We report the first demonstration of the full output polarization capabilities of FERMI FEL-1 in a campaign of experiments where the wavelength and nominal polarization are set to a series of representative values, and the polarization of the emitted intense pulses is thoroughly characterized by three independent instruments and methods, expressly developed for the task. The measured radiation polarization is consistently >90% and is not significantly spoiled by the transport optics; differing, relative transport losses for horizontal and vertical polarization become more prominent at longer wavelengths and lead to a non-negligible ellipticity for an originally circularly polarized state. The results from the different polarimeter setups validate each other, allow a cross-calibration of the instruments, and constitute a benchmark for user experiments.
Published: 2014
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33. Studies on collisional pumping of soft X-ray lasers at ILE

Author: H. Takenaka, T. Norimatsu, Y. Gu, R. Butzbach, Stéphane Sebban, Shoujun Wang, Hiroyuki Daido, K. Murai, Huajing Tang, Joseph Nilsen, T. Jitsuno, M. Vollbrecht, Yoshiaki Kato, Noriyuki Sakaya, T. Desai, Fumihiro Koike, E. Förster, Philippe Zeitoun, I. Uschmann, G. Huang, G. Zhang, K. Mima, Annie Klisnick, and G.-Y. Yoon
Subjects: Physics, business.industry, Laser pumping, Laser, Atomic and Molecular Physics, and Optics, law.invention, Optical pumping, law, Optoelectronics, Atomic number, Irradiation, Electrical and Electronic Engineering, Atomic physics, business, Lasing threshold, Tunable laser, Beam (structure)
Abstract: X-ray laser research performed at the Institute of Laser Engineering, Osaka University, are reported. The performance of X-ray lasing pumped by a train of 100-ps pulses at the wavelength range between 14 and 4 nm was investigated. The irradiance on the target was up to /spl sim/3/spl times/10/sup 14/ W/spl middot/cm. The double target amplification was successfully demonstrated with two beam irradiation for Ag, Nd, Yb, Hf, and Ta lasing. Moreover double-pass amplification at 7.9 nm has been demonstrated. The higher atomic number X-ray lasing strongly depends upon the transverse distance of the two targets.
Published: 1999
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34. High Density Optical-Field-Ionization Soft X-Ray Lasers

Author: Gilles Maynard, Philippe Zeitoun, Michaela Kozlova, Annie Klisnick, Fabien Tissandier, Julien Gautier, Stéphane Sebban, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Czech Academy of Sciences [Prague] (CAS), Institut des Sciences Moléculaires d'Orsay (ISMO), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de physique des gaz et des plasmas (LPGP), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, Physics::Optics, chemistry.chemical_element, BEAM, 7. Clean energy, 01 natural sciences, law.invention, 010309 optics, Neon, Optics, PLASMA WAVE-GUIDE, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Physics::Plasma Physics, law, 0103 physical sciences, Physics::Atomic Physics, 010306 general physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Krypton, Gain, Pulse duration, Plasma, Laser, PULSES, chemistry, Plasma channel, business, Lasing threshold
Abstract: International audience; Generating an optical-field-ionization (OFI) collisional soft X-ray laser amplifier in a high density plasma would allow a significant increase of the saturation intensity, laser gain, and reduction of the emitted pulse duration. Due to strong refraction of the pump infrared beam in the plasma, guiding techniques have to be implemented. Using an optically preformed plasma waveguide, we successfully achieved guiding of J-energy pulses in a near-critical density krypton plasma with 50 % total transmission over 5 to 10 mm. X-ray lasing at 32.8 nm has also been demonstrated. This technique is a step towards OFI recombination soft X-ray lasers. This pumping scheme requires the production of a cold and dense plasma. We propose to pump a high density neon VIII plasma by a frequency doubled intense Ti:Sa laser. Guiding of the 405 nm pump pulse has already been achieved at LOA.
Published: 2014
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35. Atomic and Plasma Physics Software and Databases for the Simulation of Short Wavelength Sources

Author: A. G. de la Varga, Deirdre Kilbane, Philippe Zeitoun, David Portillo, Manuel Cotelo, Alfonso Barbas, O. Guilbaud, A. I. Gonzalez, Pedro Velarde, F. de Dortan, and J. Vyskočil
Subjects: Physics, Software, business.industry, Nuclear fission, Extreme ultraviolet, Extreme ultraviolet lithography, Electrical engineering, Electronic engineering, Relevance (information retrieval), Plasma, Radiation, business, Variety (cybernetics)
Abstract: A large variety of software has been developed for numerical simulations of plasma radiation emission and transport and the design of optics. Many of these codes are not specifically for short wavelengths but they can be helpful in the design of X-ray and extreme ultraviolet (XUV) sources. The astrophysics community has written codes to study the spectra and evolution of stars and gas clouds while civilian and military applicants of atomic processes were aware very early of the need for atomic, plasma and hydrodynamic software to simulate nuclear fission and fusion and their effects. Of more relevance to low cost EUV sources, the large synchrotron community has also generated efficient tools for the simulation of radiation from electrons and the design of short wavelength optics. The present intention is not to present all the available software, since resources such as Computer Physics Communications and Plasma Gate give much more comprehensive, if never complete, reviews. Instead, some of the more popular programs will be introduced, as they are proven and tested assistance is available from experienced users. The software may be downloaded from the web sites listed in the references; registration is sometimes required.
Published: 2014
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36. X-Ray Lasers 2012

Author: Stéphane Sebban, J. Gautier, Philippe Zeitoun, and David Ros
Subjects: Materials science, Optics, business.industry, law, X-ray, business, Laser, law.invention
Published: 2014
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37. Harmonic Generation and Soft-X-Ray Laser with LASERIX: Source Development, Applications and Advanced Diagnosis

Author: Gilles Maynard, Chris Pouhe, Moana Pittman, Boris Vodungbo, Aurelie Gense, J. Demailly, O. Delmas, Sophie Kazamias, David Ros, Greg J. Tallents, Brigitte Cros, Olivier Guilbaud, Kevin Cassou, Gabriel Richet, Bich-Lien Nghiem, Antonin Dusseix, Philippe Zeitoun, L. A. Wilson, O. Neveu, and S. Daboussi
Subjects: Opacity, business.industry, Computer science, Far-infrared laser, Plasma, Laser, law.invention, Optics, Reliability (semiconductor), law, Extreme ultraviolet, High harmonic generation, Transient (oscillation), business
Abstract: The LASERIX facility has restarted operation in the middle of the year 2010. Since then, important work has been achieved on the XUV sources performance, reliability and stability, which lead to the construction of two beamlines. The first one is based on transient collisional soft X-ray laser. In the second one, the high order harmonic generation process is used to convert infrared laser into coherent XUV radiations. Characteristics and some recent works on both of them will be presented. Besides, a complete setup for pump-probe experiments has been developed and successfully tested. Some examples involving this device and dealing with plasma opacity, radiobiology and nanomagnetism will be presented. We will conclude this paper by a discussion on how application experiments can be turned into valuable diagnostics for XUV sources.
Published: 2014
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38. Temporal Coherence and Spectral Linewidth of Neon-Like XUV Lasers Pumped in the Quasi-steady State Regime

Author: Michaela Kozlova, Annie Klisnick, Mark Berrill, Limin Meng, Philippe Zeitoun, L. Urbanski, Fabien Tissandier, Olivier Guilbaud, Stéphane Sebban, Annette Calisti, Sandrine Ferri, Jorge J. Rocca, J. Prokupek, K. Bohacek, Mario C. Marconi, C. Mossé, M. Krus, Bernard Talin, Institut des Sciences Moléculaires d'Orsay (ISMO), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Institute of Physics [Prague], Czech Academy of Sciences [Prague] (CAS), NSF Center for EUV Science and Technology, NSF, Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), and Springer International Publishing
Subjects: Physics, Coherence time, business.industry, chemistry.chemical_element, Pulse duration, Context (language use), Laser, 01 natural sciences, law.invention, 010309 optics, Neon, Laser linewidth, Optics, chemistry, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], law, Picosecond, 0103 physical sciences, 010306 general physics, business, Coherence (physics)
Abstract: International audience; We report recent experimental progress in the characterization of the temporal coherence and related spectral linewidth of plasma-based soft X-ray lasers (SXRL). New measurements were carried out with two types of SXRLs pumped in the quasi-steady state (QSS) regime, in a capillary-discharge plasma and in a laser-produced plasma. We describe the main results obtained from both experiments and compare them to dedicated numerical simulations. We discuss the results in the context of the possibility to achieve XUV lasers with pulse duration below 1 picosecond.
Published: 2014
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39. Wavefront improvement in an injection-seeded soft x-ray laser based on a solid-target plasma amplifier

Author: Lu Li, Stéphane Sebban, T. T. T. Le, Yong Wang, Bitao Hu, Gilles Maynard, S. Daboussi, David Ros, Liang Yin, Eduardo Oliva, Shoujun Wang, Jorge J. Rocca, Philippe Zeitoun, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China, NSF Engineering Research Center for Extreme Ultraviolet Science and Technology, Colorado State University [Fort Collins] (CSU), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), AMOS program of the Office of Basic Energy Science, US Department of EnergyNSF ERC for Extreme Ultraviolet Science and Technology with equipment development under NSF MRI-ARRA 09-561SHYLAX, RTRA 'Triangle de la Physique,' INREX in LASERLAB3 and FP7 European program 284464, and European Project: 284464,LAERLAB3
Subjects: Brightness, genetic structures, Astrophysics::High Energy Astrophysical Phenomena, Physics::Optics, BEAM, Lambda, 01 natural sciences, NM, law.invention, 010309 optics, Root mean square, COHERENT, Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, 010306 general physics, Wavefront, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Amplifier, Astrophysics::Instrumentation and Methods for Astrophysics, AMPLIFICATION, Wavefront sensor, Plasma, Laser, Atomic and Molecular Physics, and Optics, eye diseases, Optoelectronics, sense organs, business
Abstract: International audience; The wavefront of an injection-seeded soft x-ray laser beam generated by amplification of high-harmonic pulses in a lambda = 18.9 nm molybdenum plasma amplifier was measured by a Hartmann wavefront sensor with an accuracy of lambda/32 root mean square (rms). A significant improvement in wavefront aberrations of 0.51 +/- 0.03 lambda rms to 0.23 +/- 0.01 lambda rms was observed as a function of plasma column length. The variation of wavefront characteristic as a function time delay between the injection of the seed and peak of soft x-ray amplifier pump was studied. The measurements were used to reconstruct the soft x-ray source and confirm its high peak brightness. (C) 2013 Optical Society of America
Published: 2013
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40. Multi-tens of GW peak power plasma-based soft x-ray laser

Author: David Ros, Lu Li, Marta Fajardo, Pedro Velarde, Stéphane Sebban, Philippe Zeitoun, Eduardo Oliva, T. T. T. Le, Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'optique appliquée (LOA), and École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Chirped pulse amplification, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Amplified spontaneous emission, plasma amplifiers, Maxwell-Bloch equations, business.industry, Seeded Soft X-Ray Lasers, Plasma, Laser pumping, Laser, Population inversion, 01 natural sciences, 7. Clean energy, law.invention, 010309 optics, Optics, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], law, 0103 physical sciences, Femtosecond, Chirped Pulse Amplification, 010306 general physics, business, Collisional excitation
Abstract: International audience; Ultra-intense X-ray sources have opened new avenues by creating new states of matter or probing and imaging living or inert matter. Free-electron lasers have a strong leadership by delivering pulses combining femtosecond duration and 10s of microJoules to milliJoule energy. However, these sources remain highly expensive limiting their number to a few worldwide. In parallel, laser-pumped soft X-ray lasers hold outstanding promises having demonstrated the most energetic monochromatic soft x-ray pulse and being intrinsically fully synchronized with any secondary source of the pump laser. Since the first successful demonstration of amplification of a high harmonic pulse in a plasma from gas in 2003 and from solid in 2008, we have developed an extensive numerical study. 2D hydrodynamic simulations showed that optimized Transient Collisional Excitation plasma amplifiers, may store up to 0.4 mJ in the population inversion. If carefully seeded, pulses of 80 fs and 20 mu J might be generated with table-top lasers (10J). As the energy extracted is far from the milliJoule requirements of most exciting applications, we studied the seminal experiment of Ditmire et al who seeded a plasma emitting milliJoules in the form of Amplified Spontaneous Emission (ASE).We retrieved and explained for the first time the experimental result (ASE 1,000 times stronger than amplified seed). We thus proposed and fully modeled the transposition of the so-called Chirped Pulse Amplification (CPA) in the soft X-ray range, showing that 6 mJ, 200 fs, fully coherent soft X-ray pulse is accessible with compact pump lasers.
Published: 2013
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41. Wavefront of seeded soft x-ray laser based on a solid-target plasma amplifier

Author: Bitao Hu, Philippe Zeitoun, Gilles Maynard, Yong Wang, T. T. T. Le, David Ros, Lu Li, Shoujun Wang, Liang Yin, Stéphane Sebban, Jorge J. Rocca, Eduardo Oliva, and S. Daboussi
Subjects: Physics, Wavefront, business.industry, Amplifier, Plasma, Laser, Signal, law.invention, Wavelength, Optics, law, Harmonics, Harmonic, Optoelectronics, business
Abstract: An experiment was set up to measure the wavefront of an injection-seeded soft x-ray laser based on a solid-target plasma amplifier. The 43rd harmonic signal from a Ti:Sa laser was used to seed a molybdenum plasma amplifier operating in the λ=18.9 nm line of Ni-like Mo. A Hartmann wavefront senor with an accuracy of λ/32 rms at this wavelength was employed to measure the wavefront of both the high harmonics seed and the seeded soft x-ray lasers. A significant improvement in wavefront aberration from 0.51±0.04λ rms to 0.25±0.03λ rms was observed as a function of plasma column length. The variation of wavefront characteristic by the time delay between the injection of the seed and the peak of soft x-ray amplifier pump was studied in this paper.
Published: 2013
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42. X-ray Chirped Pulse Amplification: towards GW Soft X-ray Lasers

Author: Thi Thu Thuy Le, Marta Fajardo, Philippe Zeitoun, Lu Li, Pedro Velarde, David Ros, Stéphane Sebban, Eduardo Oliva, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Instituto de Fusión Nuclear, Universidad Politécnica de Madrid (UPM), Inst Super Tecn, GoLP Inst Plasmas & Fusao Nucl, and SHYLAX project from RTRA-Triangle de la Physique
Subjects: Chirped pulse amplification, chirped pulse amplification, 7. Clean energy, 01 natural sciences, lcsh:Technology, law.invention, 010309 optics, X-ray laser, lcsh:Chemistry, Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, High harmonic generation, General Materials Science, 010306 general physics, Instrumentation, Collisional excitation, lcsh:QH301-705.5, plasma, Fluid Flow and Transfer Processes, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, lcsh:T, Process Chemistry and Technology, General Engineering, modeling, Plasma, Nanosecond, Laser, lcsh:QC1-999, high harmonic generation, Computer Science Applications, Pulse (physics), lcsh:Biology (General), lcsh:QD1-999, lcsh:TA1-2040, business, lcsh:Engineering (General). Civil engineering (General), lcsh:Physics
Abstract: International audience; Extensive modeling of the seeding of plasma-based soft X-ray lasers is reported in this article. Seminal experiments on amplification in plasmas created from solids have been studied in detail and explained. Using a transient collisional excitation scheme, we show that a 18 mu J, 80 fs fully coherent pulse is achievable by using plasmas pumped by a compact 10 Hz laser. We demonstrate that direct seeding of plasmas created by nanosecond lasers is not efficient. Therefore, we propose and fully study the transposition to soft X-rays of the Chirped Pulse Amplification (CPA) technique. Soft X-ray pulses with energy of 6 mJ and 200 fs duration are reachable by seeding plasmas pumped by compact 100 J, sub-ns, 1 shot/min lasers. These soft X-ray lasers would reach GW power, corresponding to an increase of 100 times as compared to the highest peak power achievable nowadays in the soft X-ray region (30 eV-1 keV). X-ray CPA is opening new horizon for soft x-ray ultra-intense sources.
Published: 2013
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43. Modeling plasma-based soft x-ray lasers of up to 20 GW

Author: Marta Fajardo, Philippe Zeitoun, and Eduardo Oliva
Subjects: Soft x ray, Optics, Materials science, business.industry, law, Plasma, business, Laser, law.invention
Published: 2013
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44. Impact of wave front and coherence optimization in coherent diffractive imaging

Author: Janos Hajdu, Willem Boutu, A. I. Gonzalez, Hamed Merdji, Philippe Zeitoun, D. Guillaumet, A. Borta, O. Gobert, Fenglin Wang, Filipe R. N. C. Maia, Guillaume Lambert, M. Ducousso, D. Gauthier, M. Perdrix, X. Ge, B. Barbrel, J. Gautier, Bertrand Carré, Service des Photons, Atomes et Molécules (SPAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Department of Cell and Molecular Biology [Uppsala], Uppsala University, Saclay SLIC laser team European Union through the EU-LASERLAB program European Union through EU-FP7 X-Motion program European Union through ATTOFEL program French ministry of research through the 2009 ANR grant 'I-NanoX' French ministry of research through the 2009 ANR grant 'Femto-X-Mag' 'Triangle de la Physique' through the COX grant C'NANO research program through the X-NANO grants Swedish Research Council European Research Council Knut och Alice Wallenbergs Stiftelse DFG Cluster of Excellence at the Munich Centre for Advanced Photonics, and ANR-09-PDOC-0017,I-NanoX,Imagerie Nanométrique Femtoseconde par diffraction X cohérente(2009)
Subjects: Diffraction, DYNAMICS, RAY, PHASE, Physics::Optics, 01 natural sciences, law.invention, NOISE, 010309 optics, Optics, X-Ray Diffraction, law, 0103 physical sciences, Image Interpretation, Computer-Assisted, 010306 general physics, Image resolution, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, MICROSCOPY, Laser, Image Enhancement, Coherent diffraction imaging, Atomic and Molecular Physics, and Optics, Coherence length, RESOLUTION, Optoelectronics, Nanoparticles, Laser beam quality, business, Phase retrieval, Artifacts, Algorithms, Coherence (physics)
Abstract: International audience; We present single shot nanoscale imaging using a table-top femtosecond soft X-ray laser harmonic source at a wavelength of 32 nm. We show that the phase retrieval process in coherent diffractive imaging critically depends on beam quality. Coherence and image fidelity are measured from single-shot coherent diffraction patterns of isolated nano-patterned slits. Impact of flux, wave front and coherence of the soft X-ray beam on the phase retrieval process and the image quality are discussed. After beam improvements, a final image reconstruction is presented with a spatial resolution of 78 nm (half period) in a single 20 fs laser harmonic shot. (C) 2013 Optical Society of America
Published: 2013
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45. Microfocusing of the FERMI@Elettra FEL beam with a K–B active optics system: Spot size predictions by application of the WISE code

Author: Maya Kiskinova, Guillaume Dovillaire, Guillaume Lambert, M. de Marco, David Gauthier, Flavio Capotondi, G. De Ninno, Daniele Cocco, Marco Zangrando, C. Fava, Emanuele Pedersoli, Philippe Zeitoun, Willem Boutu, A. I. Gonzalez, Cristian Svetina, R. Gobessi, S. Gerusina, A. Abrami, Nicola Mahne, Hamed Merdji, Lorenzo Raimondi, Synchrotron ELETTRA, CNR Istituto Officina dei Materiali (IOM), Consiglio Nazionale delle Ricerche [Roma] (CNR), Sincrotrone Trieste, NEST-INFM (INFM), Istituto Nazionale di Fisica Nucleare (INFN), Dipartimento di Scienze Fisiche, Informatiche e Matematiche [Modena], Università degli Studi di Modena e Reggio Emilia (UNIMORE), School of Applied Sciences, University of Nova Gorica, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Imagine Optic, AFOP, Laboratoire de Sociologie et d'Anthropologie - UFC (EA 3189) (LASA), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Service des Photons, Atomes et Molécules (SPAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratorio de ecologia Quimica, Universidad de la República [Montevideo] (UCUR), EDF (EDF), Laboratorio TASC, National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Università degli Studi di Modena e Reggio Emilia = University of Modena and Reggio Emilia (UNIMORE), Laboratoire de Sociologie et d'Anthropologie - UFC (UR 3189) (LASA), Universidad de la República [Montevideo] (UDELAR), CNR - Istituto Officina dei Materiali ( IOM ), Consiglio Nazionale delle Ricerche [Roma] ( CNR ), NEST-INFM ( INFM ), National Institute for Nuclear Physics ( INFN ), Dipartimento di Fisica, Universit`a di Modena e Reggio Emilia, Laboratoire d'optique appliquée ( LOA ), École Nationale Supérieure de Techniques Avancées ( Univ. Paris-Saclay, ENSTA ParisTech ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Sociologie et d'Anthropologie - UFC ( LASA ), Université Bourgogne Franche-Comté ( UBFC ) -Université de Franche-Comté ( UFC ), Service des Photons, Atomes et Molécules ( SPAM ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Universidad de la República, and EDF ( EDF )
Subjects: Diffraction, Nuclear and High Energy Physics, Aperture, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], 030303 biophysics, 01 natural sciences, 03 medical and health sciences, Optics, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, [ PHYS.PHYS.PHYS-ACC-PH ] Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], 010306 general physics, Instrumentation, Physics, [PHYS]Physics [physics], 0303 health sciences, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS ] Physics [physics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], Geometrical optics, business.industry, Free-electron laser, Active optics, [ PHYS.PHYS.PHYS-PLASM-PH ] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Physical optics, Focus (optics), business, Fresnel diffraction
Abstract: International audience; FERMI@Elettra, the first seeded EUV-SXR free electron laser (FEL) facility located at Elettra Sincrotrone Trieste has been conceived to provide very short (10–100 fs) pulses with ultrahigh peak brightness and wavelengths from 100 nm to 4 nm. A section fully dedicated to the photon transport and analysis diagnostics, named PADReS, has already been installed and commissioned. Three of the beamlines, EIS-TIMEX, DiProI and LDM, installed after the PADReS section, are in advanced commissioning state and will accept the first users in December 2012. These beam lines employ active X-ray optics in order to focus the FEL beam as well as to perform a controlled beam-shaping at focus.Starting from mirror surface metrology characterization, it is difficult to predict the focal spot shape applying only methods based on geometrical optics such as the ray tracing. Within the geometrical optics approach one cannot take into account the diffraction effect from the optics edges, i.e. the aperture diffraction, and the impact of different surface spatial wavelengths to the spot size degradation. Both these effects are strongly dependent on the photon beam energy and mirror incident angles.We employed a method based on physical optics, which applies the Huygens–Fresnel principle to reflection (on which the WISE code is based). In this work we report the results of the first measurements of the focal spot in the DiProI beamline end-station and compare them to the predictions computed with Shadow code and WISE code, starting from the mirror surface profile characterization.
Published: 2013
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46. Spectral chracterization of fully phase matched high harmonics generated in a hollow waveguide for free electron laser seeding

Author: Philippe Zeitoun, Victor Malka, Christoph P. Hauri, F. Ardana-Lamas, A. Trisorio, G. Lambert, and Boris Vodungbo
Subjects: Materials science, Spectrometer, business.industry, Phase (waves), Physics::Optics, Grating, Waveguide (optics), Optics, Harmonics, Harmonic, Optoelectronics, High harmonic generation, business, Diffraction grating
Abstract: In this work, we present a bright and fully phase matched high harmonic (HH) source for seeding an FEL in the soft X-ray spectral region around 120 eV, being significantly shorter than what has been demonstrated up to now (40 nm ). Full phase matching of the generated harmonics is achieved using an unmodulated hollow waveguide. The waveguide consists on an assembly of two sapphire blocks where a semi-cylindrical groove of 100 μm radius has been drilled. The generated harmonics are characterized with a grating based spectrometer.
Published: 2013
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47. Reduction of X-ray laser driver energy

Author: Philippe Zeitoun, Gregory J. Tallents, Arif Demir, D. Schlogl, E.E. Fill, J. Krishnan, B. Rus, M. Nantel, M. Holden, Annie Klisnick, Antoine Carillon, Pierre Jaegle, Gerard Jamelot, Ciaran Lewis, and A.G. McPhee
Subjects: Physics, Water window, Radiation, business.industry, Condensed Matter Physics, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Coherence length, X-ray laser, Reduction (complexity), Transverse plane, Optics, law, Physical and Theoretical Chemistry, business, Spectroscopy, Energy (signal processing), Line (formation)
Abstract: Future development of X-ray lasers (XRL) applications goes through a reduction of the driver energy. Amplification close or inside the “water window” using the Li-like recombination scheme was tested. A gain of ∼0.8 cm −1 at 5.77 nm (Ca 17+ ) was measured. On the other hand, at LULI the use of low energy prepulse has permitted to achieve a very efficient saturated X-ray laser working on the 0–1 line (21.2 nm) on the Ne-like collisional scheme. The 5 MW, 200 μm transverse coherence length XRL is extremely well suited for applications.
Published: 1996
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48. Spectral characterization of fully phase-matched high harmonics generated in a hollow waveguide for free-electron laser seeding

Author: Victor Malka, Christoph P. Hauri, Boris Vodungbo, G. Lambert, Philippe Zeitoun, F. Ardana-Lamas, A. Trisorio, Zaparucha, Pierre, Laboratoire de Sociologie et d'Anthropologie - UFC (EA 3189) (LASA), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Paul Scherrer Institute (PSI), Paul Sherrer Institut, Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratoire de Sociologie et d'Anthropologie - UFC ( LASA ), Université Bourgogne Franche-Comté ( UBFC ) -Université de Franche-Comté ( UFC ), Laboratoire d'optique appliquée ( LOA ), École Nationale Supérieure de Techniques Avancées ( Univ. Paris-Saclay, ENSTA ParisTech ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), and Paul Scherrer Institute ( PSI )
Subjects: [PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], Photon, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], General Physics and Astronomy, Physics::Optics, Photon energy, 7. Clean energy, 01 natural sciences, law.invention, 010309 optics, Harmonic spectrum, Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, High harmonic generation, [ PHYS.PHYS.PHYS-ACC-PH ] Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], 010306 general physics, Physics, [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS ] Physics [physics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Free-electron laser, [ PHYS.PHYS.PHYS-PLASM-PH ] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Laser, Harmonics, [PHYS.PHYS.PHYS-PLASM-PH] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Optoelectronics, Seeding, business
Abstract: International audience; We present a bright and coherent soft x-ray source based on high harmonic generation delivering up to 1010 photons per second centered at 120 eV within an 80 eV bandwidth. The source profits from fully phase-matched harmonic generation in an unmodulated hollow waveguide. Under these conditions, the resulting high harmonic spectrum is shown to be flat-top up to the cutoff photon energy and in line with the theoretical single-atom response. The source is characterized in view of seeding a free-electron laser and is shown to overcome the free-electron laser noise floor for wavelengths as short as 8.9 nm. This opens the perspective toward direct high harmonic seeding of a free-electron laser at soft x-ray wavelengths.
Published: 2013
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49. A proposal for multi-tens of GW fully coherent femtosecond soft X-ray lasers

Author: Pedro Velarde, Julien Gautier, David Ros, Philippe Zeitoun, Lianhe Li, Marta Fajardo, Guillaume Lambert, Eduardo Oliva, T. T. T. Le, Moana Pittman, Stéphane Sebban, Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Instituto de Telecomunicações [Lisboa, Portugal], New York University School of Medicine, NYU System (NYU), LASERIX, Université Paris-Sud - Paris 11 (UP11), Laboratoire de Modélisation et Simulation Multi Echelle (MSME), Université Paris-Est Marne-la-Vallée (UPEM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche des Cordeliers (CRC), Université Pierre et Marie Curie - Paris 6 (UPMC)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de Sociologie et d'Anthropologie - UFC (UR 3189) (LASA), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Instituto de Fusión Nuclear, Universidad Politécnica de Madrid (UPM), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Paris-Est Marne-la-Vallée (UPEM), Université Pierre et Marie Curie - Paris 6 (UPMC)-École pratique des hautes études (EPHE), Laboratoire de Sociologie et d'Anthropologie - UFC (EA 3189) (LASA), Université Paris Diderot - Paris 7 (UPD7)-École pratique des hautes études (EPHE)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université de Franche-Comté (UFC), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris), Laboratoire de physique des gaz et des plasmas ( LPGP ), Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS ), Department of Pathology, New York, NY 10016, USA, Université Paris-Sud - Paris 11 ( UP11 ), Laboratoire de Modélisation et Simulation Multi Echelle ( MSME ), Université Paris-Est Marne-la-Vallée ( UPEM ) -Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Recherche des Cordeliers ( CRC ), Université Paris Diderot - Paris 7 ( UPD7 ) -École pratique des hautes études ( EPHE ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Laboratoire de Sociologie et d'Anthropologie - UFC (EA 3189) ( LASA ), Université Bourgogne Franche-Comté [COMUE] ( UBFC ) -Université de Franche-Comté ( UFC ), Universidad Politécnica de Madrid ( UPM ), Laboratoire d'interaction du rayonnement X avec la matière ( LIXAM ), Laboratoire d'optique appliquée ( LOA ), and École Nationale Supérieure de Techniques Avancées ( Univ. Paris-Saclay, ENSTA ParisTech ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Chirped pulse amplification, Photon, Astrophysics::High Energy Astrophysical Phenomena, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], 01 natural sciences, law.invention, 010309 optics, Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, [ PHYS.PHYS.PHYS-ACC-PH ] Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], 010306 general physics, Physics, [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS ] Physics [physics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Amplifier, Física, [ PHYS.PHYS.PHYS-PLASM-PH ] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Plasma, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Harmonics, Picosecond, Femtosecond, Energía Nuclear, business
Abstract: International audience; X-ray free-electron lasers1, 2 delivering up to 1 × 1013 coherent photons in femtosecond pulses are bringing about a revolution in X-ray science3, 4, 5. However, some plasma-based soft X-ray lasers6 are attractive because they spontaneously emit an even higher number of photons (1 × 1015), but these are emitted in incoherent and long (hundreds of picoseconds) pulses7 as a consequence of the amplification of stochastic incoherent self-emission. Previous experimental attempts to seed such amplifiers with coherent femtosecond soft X-rays resulted in as yet unexplained weak amplification of the seed and strong amplification of incoherent spontaneous emission8. Using a time-dependent Maxwell–Bloch model describing the amplification of both coherent and incoherent soft X-rays in plasma, we explain the observed inefficiency and propose a new amplification scheme based on the seeding of stretched high harmonics using a transposition of chirped pulse amplification to soft X-rays. This scheme is able to deliver 5 × 1014 fully coherent soft X-ray photons in 200 fs pulses and with a peak power of 20 GW.
Published: 2012
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50. Modelization of seeded soft X-ray lasers using plasma amplifiers from solid

Author: Philippe Zeitoun, Eduardo Oliva, Laboratoire d'optique appliquée (LOA), and École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Soft x ray, High Order Harmonics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Maxwell-Bloch equation, Amplifier, Seeding, plasma hydrodynamics, Ranging, Coherent imaging, Plasma, Laser, 7. Clean energy, law.invention, Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], business, Energy (signal processing), Plasma Based Soft X-ray Lasers
Abstract: International audience; Plasma-based seeded soft x-ray lasers (PBSXRL) have the potential to generate high-energy, fully coherent, short pulse beam. Nowadays, PBSXRL have demonstrated experimentally 1 mu J, 1 ps (1 MW) fully coherent, aberration-free pulses. Nevertheless, most exciting applications (as single-shot coherent imaging) require pulses shorter than 200 fs and energy ranging from 10 mu J to several miliJoules. In this chapter we will review the theoretical modeling tools and the results obtained related to this source.
Published: 2012
Full Text: View/download PDF

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