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7 results on '"Capotondi, Flavio"'

1. Widely tunable two-colour seeded free-electron laser source for resonant-pump resonant-probe magnetic scattering

Author

Ferrari, Eugenio, Spezzani, Carlo, Fortuna, Franck, Delaunay, Renaud, Vidal, Franck, Nikolov, Ivaylo, Cinquegrana, Paolo, Diviacco, Bruno, Gauthier, David, Penco, Giuseppe, Ribic, Primoz Rebernik, Roussel, Eleonore, Trovo, Marco, Moussy, Jean Baptiste, Pincelli, Tommaso, Lounis, Lounès, Manfredda, Michele, Pedersoli, Emanuele, Capotondi, Flavio, Svetina, Cristian, Mahne, Nicola, Zangrando, Marco, Raimondi, Lorenzo, Demidovich, Alexander, Giannessi, Luca, De Ninno, Giovanni, Danailov, Miltcho Boyanov, Allaria, Enrico, Sacchi, Maurizio, Elettra Sincrotrone Trieste, ELETTRA Sincrotrone Trieste, Dipartimento di Fisica ( DIPARTIMENTO DI FISICA ), Università degli studi di Trieste, Laboratoire de Physique des Solides ( LPS ), Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Sciences Nucléaires et de Sciences de la Matière ( CSNSM ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Chimie Physique - Matière et Rayonnement ( LCPMR ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), Croissance et propriétés de systèmes hybrides en couches minces ( INSP-E8 ), Institut des Nanosciences de Paris ( INSP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), Service de physique de l'état condensé ( SPEC - UMR3680 ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ), Dipartimento di Fisica (Milano), Università degli studi di Milano [Milano], École normale supérieure - Paris ( ENS Paris ), Graduate School of Nanotechnology, CNR - Istituto Officina dei Materiali ( IOM ), Consiglio Nazionale delle Ricerche [Roma] ( CNR ), Italian National agency for new technologies, Energy and sustainable economic development [Frascati] ( ENEA ), Laboratory of Quantum Optics, University of Nova Gorica, Synchrotron SOLEIL ( SSOLEIL ), Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique des Solides (LPS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), CSNSM PS2, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Croissance et propriétés de systèmes hybrides en couches minces (INSP-E8), Institut des Nanosciences de Paris (INSP), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Laboratoire Nano-Magnétisme et Oxydes (LNO), Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, PSL Research University (PSL), CNR Istituto Officina dei Materiali (IOM), Consiglio Nazionale delle Ricerche [Roma] (CNR), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica [Trieste], Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Milano [Milano] (UNIMI), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL), Italian National agency for new technologies, Energy and sustainable economic development [Frascati] (ENEA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Science, General Physics and Astronomy, Physics::Optics, 02 engineering and technology, Electron, 01 natural sciences, 7. Clean energy, Article, General Biochemistry, Genetics and Molecular Biology, law.invention, Optics, Optical physics, law, 0103 physical sciences, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 010306 general physics, Physics, [PHYS]Physics [physics], Range (particle radiation), Multidisciplinary, [ PHYS ] Physics [physics], business.industry, Scattering, Free-electron laser, General Chemistry, 021001 nanoscience & nanotechnology, Laser, Physical sciences, Applied physics, Wavelength, Extreme ultraviolet, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Optoelectronics, Physics::Accelerator Physics, 0210 nano-technology, business
Abstract

The advent of free-electron laser (FEL) sources delivering two synchronized pulses of different wavelengths (or colours) has made available a whole range of novel pump–probe experiments. This communication describes a major step forward using a new configuration of the FERMI FEL-seeded source to deliver two pulses with different wavelengths, each tunable independently over a broad spectral range with adjustable time delay. The FEL scheme makes use of two seed laser beams of different wavelengths and of a split radiator section to generate two extreme ultraviolet pulses from distinct portions of the same electron bunch. The tunability range of this new two-colour source meets the requirements of double-resonant FEL pump/FEL probe time-resolved studies. We demonstrate its performance in a proof-of-principle magnetic scattering experiment in Fe–Ni compounds, by tuning the FEL wavelengths to the Fe and Ni 3p resonances., Two-colour X-ray free electron laser is a powerful tool for pump–probe measurements, but currently constrained by limited tunability. Here, Ferrari et al. develop a configuration that allows tuning both the pump and the probe to specific electronic excitations, providing element selectivity.

Published
2016

2. Kirkpatrick–Baez active optics system at FERMI: system performance analysis.

Author

Raimondi, Lorenzo, Manfredda, Michele, Mahne, Nicola, Cocco, Daniele, Capotondi, Flavio, Pedersoli, Emanuele, Kiskinova, Maya, and Zangrando, Marco

Subjects
OPTICS, FOCAL planes, SYSTEM analysis, FOCUS (Optics), WAVEFRONT sensors, FREE electron lasers, AUTOPSY
Abstract

FERMI is the first and only seeded EUV‐SXR free‐electron laser (FEL) facility available to users; it operates at Elettra – Sincrotrone Trieste (Italy) and it presents five operating endstations. Three of them, namely LDM (Low Density Matter), DiProI (Diffraction and Projection Imaging) and MagneDyn (Magneto‐Dynamical studies), use a Kirkpatrick–Baez (KB) active X‐ray optics system to focus the FEL pulses into the experimental chambers. The present work reports on the final results of the upgraded KB Active Optics Systems (KAOS), which have been mechanically modified in order to improve stability and repeatability with respect to the original design. The results have been obtained on both the FERMI FEL lines, FEL1 and FEL2, and are particularly relevant for the latter as it is the low‐wavelength line recently opened to users. After a thorough description of the new mechanical layout of the system and the aspects that have been improved after the refurbishment, a set of simulations of the optical performances are presented. The code used to simulate the behavior of KAOS is WISEr, a physical‐optics‐based tool, which is freely accessible, and integrated into the Oasys platform, that takes into account the specific surface metrology characterization of the beamline mirrors, including figure errors and microroughness power spectral density. The results of WISEr are then used as a reference for the actual optimization of the optical system. This procedure relies heavily on a wavefront sensor (WFS) mounted out of focus to optimize the refocusing mirrors alignment as well as their curvature bending (by minimization of the coefficients of the Zernike wavefront expansion). Moreover, the WFS data are used to reconstruct the focal spot parameters by means of a back‐propagation of the electric field. Finally, these results are compared with those obtained after the FEL ablation of a PMMA layer positioned on the focal plane, and analyzed ex situ in a post‐mortem fashion. The mechanically refurbished optical system and the multi‐technique alignment approach, aimed at optimizing the mirrors' curvature, pitch and roll angles, allowed a focal spot of 1.8 µm × 2.4 µm at 4.14 nm wavelength (FEL2) to be inferred, confirmed by the PMMA ablation imprints. [ABSTRACT FROM AUTHOR]

Published
2019
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3. Experimental setups for FEL-based four-wave mixing experiments at FERMI

Author

Paolo Sigalotti, R. Godnig, Giulio Gaio, G. Kurdi, C. Fava, Emanuele Pedersoli, L. Pivetta, Roberto Passuello, Alessandro Gessini, Filippo Bencivenga, Marco Lonza, Miltcho B. Danailov, Pietro Parisse, Riccardo Cucini, Martin Scarcia, G. Loda, Marco Zangrando, Riccardo Mincigrucci, R. Gobessi, Emiliano Principi, Michele Manfredda, M. Zaccaria, F. Giacuzzo, Simone Gerusina, Cristian Svetina, Andrea Battistoni, Flavio Capotondi, Alexander Demidovich, Roberto Sauro, A. Abrami, Milan Prica, Riccardo Grisonich, Ilaria Rago, G. Pangon, Nicola Mahne, Lorenzo Raimondi, Roberto Borghes, Maya Kiskinova, F. Dallari, Claudio Masciovecchio, Bencivenga, Filippo, Zangrando, Marco, Svetina, Cristian, Abrami, Alessandro, Battistoni, Andrea, Borghes, Roberto, Capotondi, Flavio, Cucini, Riccardo, Dallari, Francesco, Danailov, Miltcho, Demidovich, Alexander, Fava, Claudio, Gaio, Giulio, Gerusina, Simone, Gessini, Alessandro, Giacuzzo, Fabio, Gobessi, Riccardo, Godnig, Roberto, Grisonich, Riccardo, Kiskinova, Maya, Kurdi, Gabor, Loda, Giorgio, Lonza, Marco, Mahne, Nicola, Manfredda, Michele, Mincigrucci, Riccardo, Pangon, Gianpiero, Parisse, Pietro, Passuello, Roberto, Pedersoli, Emanuele, Pivetta, Lorenzo, Prica, Milan, Principi, Emiliano, Rago, ILARIA, CARMELA, Raimondi, Lorenzo, Sauro, Roberto, Scarcia, Martin, Sigalotti, Paolo, Zaccaria, Maurizio, and Masciovecchio, Claudio

Subjects
Nuclear and High Energy Physics, 02 engineering and technology, Grating, Inelastic scattering, 01 natural sciences, law.invention, Four-wave mixing, Optics, free-electron laser, law, 0103 physical sciences, non-linear optic, 010306 general physics, Instrumentation, Nuclear and High Energy Physic, Physics, Radiation, business.industry, four-wave-mixing, free-electron lasers, non-linear optics, transient grating, Nonlinear optics, 021001 nanoscience & nanotechnology, Laser, Beamline, Transient (oscillation), 0210 nano-technology, business, Fermi Gamma-ray Space Telescope
Abstract

The recent advent of free-electron laser (FEL) sources is driving the scientific community to extend table-top laser research to shorter wavelengths adding elemental selectivity and chemical state specificity. Both a compact setup (mini-TIMER) and a separate instrument (EIS-TIMER) dedicated to four-wave-mixing (FWM) experiments has been designed and constructed, to be operated as a branch of the Elastic and Inelastic Scattering beamline: EIS. The FWM experiments that are planned at EIS-TIMER are based on the transient grating approach, where two crossed FEL pulses create a controlled modulation of the sample excitations while a third time-delayed pulse is used to monitor the dynamics of the excited state. This manuscript describes such experimental facilities, showing the preliminary results of the commissioning of the EIS-TIMER beamline, and discusses original experimental strategies being developed to study the dynamics of matter at the fs-nm time-length scales. In the near future such experimental tools will allow more sophisticated FEL-based FWM applications, that also include the use of multiple and multi-color FEL pulses. © 2016 International Union of Crystallography.

Published
2015

4. The FERMI free-electron lasers

Author

Allaria E., Badano L., Bassanese S., Capotondi F., Castronovo D., Cinquegrana P., Danailov M.B., D'Auria G., Demidovich A., De Monte R., De Ninno G., Di Mitri S., Diviacco B., Fawley W.M., Ferianis M., Ferrari E., Gaio G., Gauthier D., Giannessi L., Iazzourene F., Kurdi G., Mahne N., Nikolov I., Parmigiani F., Penco G., Raimondi L., Rebernik P., Rossi F., Roussel E., Scafuri C., Serpico C., Sigalotti P., Spezzani C., Svandrlik M., Svetina C., Trovo M., Veronese M., Zangrando D., Zangrando M., Giannessi, L., Allaria, E, Badano, L., Bassanese, S., Capotondi, Flavio, Castronovo, D., Cinquegrana, Paolo, Danailov, M. B., D'Auria, G., Demidovich, A., De Monte, R., DE NINNO, Giovanni, DI MITRI, Simone, Diviacco, Bruno, Fawley, W. M., Ferianis, M., Ferrari, Eugenio, Gaio, G., Gauthier, D., Iazzourene, F., Kurdi, G., Mahne, N., Nikolov, I., Parmigiani, Fulvio, Penco, G., Raimondi, L., Rebernik, P., Rossi, F., Roussel, E., Scafuri, C., Serpico, Claudio, Sigalotti, P., Spezzani, C., Svandrlik, M., Svetina, Cristian, Trovò, Mauro, Veronese, M., Zangrando, D., and Zangrando, M.

Subjects
Nuclear and High Energy Physics, Extreme ultraviolet lithography, 02 engineering and technology, Radiation, 01 natural sciences, law.invention, Optics, free-electron laser, law, 0103 physical sciences, 010306 general physics, coherence Special issue on X-ray Free-Electron Laser, Instrumentation, Nuclear and High Energy Physic, Physics, coherence Special issue on X-ray Free-Electron Lasers, lasers, free-electron lasers, business.industry, Wavelength range, Free-electron laser, 021001 nanoscience & nanotechnology, Laser, laser, Extreme ultraviolet, Optoelectronics, 0210 nano-technology, business, Coherence (physics), Fermi Gamma-ray Space Telescope
Abstract

FERMI is a seeded free-electron laser (FEL) facility located at the Elettra laboratory in Trieste, Italy, and is now in user operation with its first FEL line, FEL-1, covering the wavelength range between 100 and 20 nm. The second FEL line, FEL-2, a high-gain harmonic generation double-stage cascade covering the wavelength range 20–4 nm, has also completed commissioning and the first user call has been recently opened. An overview of the typical operating modes of the facility is presented.

Published
2015

5. 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

6. Multi-colour pulses from seeded free-electron-lasers: Towards the development of non-linear core-level coherent spectroscopies

Author

F. Dallari, Miltcho B. Danailov, Filippo Bencivenga, Michele Manfredda, Maya Kiskinova, Emanuele Pedersoli, Daniele Fausti, Claudio Masciovecchio, F. Casolari, Giovanni De Ninno, Flavio Capotondi, Bencivenga, Filippo, Capotondi, Flavio, Casolari, Francesco, Dallari, Francesco, Danailov, Miltcho B., DE NINNO, Giovanni, Fausti, Daniele, Kiskinova, Maya, Manfredda, Michele, Masciovecchio, Claudio, and Pedersoli, Emanuele

Subjects
Diffraction, Physics, Free electron model, business.industry, Lasers, Spectrum Analysis, X-Rays, Free-electron laser, Physics::Optics, Electrons, Laser, Fluence, law.invention, Optics, law, Extreme ultraviolet, Physics::Accelerator Physics, Optoelectronics, Physical and Theoretical Chemistry, business, Ultrashort pulse, Excitation
Abstract

We report on new opportunities for ultrafast science thanks to the use of two-colour extreme ultraviolet (XUV) pulses at the FERMI free electron laser (FEL) facility. The two pulses have been employed to carry out a pioneering FEL-pump/FEL-probe diffraction experiment using a Ti target and tuning the FEL pulses to the M2/3-edge in order to explore the dependence of the dielectric constant on the excitation fluence. The future impact that the use of such a two-colour FEL emission will have on the development of ultrafast wave-mixing methods in the XUV/soft X-ray range is addressed and discussed.

Published
2014

7. Two-colour pump–probe experiments with a twin-pulse-seed extreme ultraviolet free-electron laser

Author

Emanuele Pedersoli, Cristian Svetina, Simone Spampinati, Paolo Sigalotti, Roberto Borghes, Paolo Cinquegrana, C. Serpico, Lorenzo Raimondi, David Gauthier, Flavio Capotondi, P. Charalambous, G. Kurdi, L. Froehlich, R. Ivanov, Ivaylo Nikolov, Carlo Spezzani, Filippo Bencivenga, Nicola Mahne, Miltcho B. Danailov, Alexander Demidovich, Benoît Mahieu, Eugenio Ferrari, Giuseppe Penco, Bruno Diviacco, Luca Giannessi, G. De Ninno, Marco Zangrando, Mauro Trovò, Enrico Allaria, Alessandro Gessini, S. Di Mitri, D. Castronovo, W. M. Fawley, Maya Kiskinova, Claudio Masciovecchio, Daniele Fausti, Sincrotrone Trieste, NEST-INFM (INFM), National Institute for Nuclear Physics (INFN), School of Applied Sciences, University of Nova Gorica, Techniques of Informatics and Microelectronics for integrated systems Architecture (TIMA), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Italian National agency for new technologies, Energy and sustainable economic development [Frascati] (ENEA), Elettra Sincrotrone Trieste, Laboratoire d'optique appliquée (LOA), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris), CNR Istituto Officina dei Materiali (IOM), Consiglio Nazionale delle Ricerche [Roma] (CNR), Istituto Nazionale di Fisica Nucleare (INFN), Techniques de l'Informatique et de la Microélectronique pour l'Architecture des systèmes intégrés (TIMA), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-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), Allaria, E., Bencivenga, F., Borghes, R., Capotondi, Flavio, Castronovo, D., Charalambous, P., Cinquegrana, Paolo, Danailov, M. B., DE NINNO, Giovanni, Demidovich, A., Di Mitri, S., Diviacco, B., Fausti, Daniele, Fawley, W. M., Ferrari, Eugenio, Froehlich, L., Gauthier, D., Gessini, A., Giannessi, L., Ivanov, R., Kiskinova, Maya, Kurdi, G., Mahieu, B., Mahne, N., Nikolov, I., Masciovecchio, C., Pedersoli, E., Penco, G., Raimondi, L., Serpico, Claudio, Sigalotti, P., Spampinati, S., Spezzani, C., Svetina, Cristian, Trovò, Mauro, and Zangrando, M.

Subjects
Diffraction, Genetics and Molecular Biology (all), [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], General Physics and Astronomy, Nanotechnology, 01 natural sciences, Biochemistry, Article, General Biochemistry, Genetics and Molecular Biology, 010305 fluids & plasmas, law.invention, Physics and Astronomy (all), Optics, law, 0103 physical sciences, High harmonic generation, 010306 general physics, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Biochemistry, Genetics and Molecular Biology (all), Multidisciplinary, [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], business.industry, Chemistry (all), Free-electron laser, Time evolution, General Chemistry, Laser, 3. Good health, Pulse (physics), Extreme ultraviolet, State of matter, business
Abstract

Exploring the dynamics of matter driven to extreme non-equilibrium states by an intense ultrashort X-ray pulse is becoming reality, thanks to the advent of free-electron laser technology that allows development of different schemes for probing the response at variable time delay with a second pulse. Here we report the generation of two-colour extreme ultraviolet pulses of controlled wavelengths, intensity and timing by seeding of high-gain harmonic generation free-electron laser with multiple independent laser pulses. The potential of this new scheme is demonstrated by the time evolution of a titanium-grating diffraction pattern, tuning the two coherent pulses to the titanium M-resonance and varying their intensities. This reveals that an intense pulse induces abrupt pattern changes on a time scale shorter than hydrodynamic expansion and ablation. This result exemplifies the essential capabilities of the jitter-free multiple-colour free-electron laser pulse sequences to study evolving states of matter with element sensitivity., Free-electron lasers are a powerful new tool for studying properties and transient states of matter. Here, the authors use a novel seed scheme for generation of two XUV laser pulses of controlled wavelength and time separation that enables access to ultrafast phenomena with elemental sensitivity.

Published
2013

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