Search

Your search keyword '"Jean-Paul Chambaret"' showing total 131 results
Start Over Author "Jean-Paul Chambaret"
131 results on '"Jean-Paul Chambaret"'

1. High Damage Threshold Meter-scale Optical Components for Multi-PW Lasers

Author

Marc Sentis, Antoine Freneaux, Adrien Hervy, Djidel Slimane, M. Somekh, Nicolas Bonod, Laurent Gallais, Jean Paul Chambaret, Daniel Mouricaud, Frédéric Desserouer, Arnaud Cotel, François Mathieu, Catherine Leblanc, R. Clady, Gilles Chériaux, Olivier Uteza, REOSC, SAFRAN Group, ILM (ILM), Institut FRESNEL (FRESNEL), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-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), CLARTE (CLARTE), HORIBA France SAS [Villeneuve d'Ascq], HORIBA Scientific [France], Laboratoire Lasers, Plasmas et Procédés photoniques (LP3), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École Centrale de Marseille (ECM)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Marseille (ECM)-Aix Marseille Université (AMU), and Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)

Subjects
Wavefront, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, Scale (ratio), business.industry, Physics::Optics, Dielectric, Laser, law.invention, Condensed Matter::Materials Science, Optics, law, Metre, Optoelectronics, Physics::Atomic Physics, business, Laser beams, ComputingMilieux_MISCELLANEOUS
Abstract

Dielectric mirrors, hybrid metal-dielectric and a new generation of hybrid metal-dielectric gratings with high damage threshold suitable for 10 PW laser systems are presented.

Published
2016

2. Efficient aberrations pre-compensation and wavefront correction with a deformable mirror in the middle of a petawatt-class CPA laser system

Author

L. Canova, R. Clady, F. Canova, Thomas A. Planchon, G. Lucchini, Moana Pittman, X. Levecq, Dimitri Batani, F. Ple, Alessandro Flacco, Roberto Benocci, E. Lavergne, G. Dovillaire, M. Silva, Jean Paul Chambaret, Canova, F, Flacco, A, Canova, L, Clady, R, Chambaret, J, Plè, F, Pittman, M, Planchon, T, Silva, M, Benocci, R, Lucchini, G, Batani, D, Lavergne, E, Dovillaire, G, and Levecq, X

Subjects
Wavefront, Wavefront aberration, Computer science, business.industry, Experimental validation, Condensed Matter Physics, Laser, petawatt-cla, Atomic and Molecular Physics, and Optics, Deformable mirror, Compensation (engineering), law.invention, FIS/01 - FISICA SPERIMENTALE, Optics, law, Point (geometry), Electrical and Electronic Engineering, Adaptive optics, business, CPA laser system
Abstract

In this paper, we describe the experimental validation of the technique of correction of wavefront aberration in the middle of the laser amplifying chain. This technique allows the correction of the aberrations from the first part of the laser system, and the pre-compensation of the aberrations built in the second part. This approach will allow an effective aberration management in the laser chain, to protect the optical surfaces and optimize performances, and is the only possible approach for multi-petawatt laser system from the technical and economical point of view. This approach is now possible after the introduction of new deformable mirrors with lower static aberrations and higher dynamic than the standard devices.

Published
2007
Full Text
View/download PDF

3. Chaînes laser intenses à contraste élevé par amplification directe dans un milieu gazeux à excimères*

Author

R. Clady, Olivier Uteza, L. D. Mikheev, M. Gastaud, Marc L. Sentis, Jean Paul Chambaret, G. Coustillier, and V. Tcheremiskine

Subjects
Physics, Chirped pulse amplification, High power lasers, General Physics and Astronomy, Molecular biology
Abstract

Cet article presente l'interet du concept de laser hybride (solide/gaz) et de l'amplification directe de puissance dans un milieu a excimeres pour les chaines laser de puissance ultrabreves a contraste eleve. L'architecture d'une chaine laser multiterawatt basee sur l'emploi du milieu amplificateur XeF(C-A) pompe par voie photolytique est ensuite detaillee, ainsi que les perspectives de dimensionnement de cette approche au niveau PW et EW.

Published
2006
Full Text
View/download PDF

4. Power amplification for petawatt Ti: Sapphire lasers: New strategies for high fluence pumping

Author

Jean Paul Chambaret and F. Canova

Subjects
Microlens, Optical fiber, Materials science, business.industry, Ti:sapphire laser, Physics::Optics, General Physics and Astronomy, Laser, law.invention, Optical pumping, Optics, law, Femtosecond, Sapphire, Optoelectronics, business, Lasing threshold
Abstract

One of the major bottlenecks when we pump large Ti:Sapphire crystals, to reach Petawatt-level laser amplification, is the careful control of the spatial energy distribution of Nd:Glass pump lasers. Commercially available nanosecond Nd:Glass and Nd:YAG lasers exhibit poor spatial profile quality especially in the near and in the intermediate field, which can lead to local hot spots, responsible of damages in crystals, and parasitic transverse lasing enhancement, strongly dependent on the profile of the pump beam. For these reasons, it is mandatory to keep the pump beam intensity profile as flat as possible on the pumped crystal. To guarantee the best pumping conditions we are investigating the combined use of DOE (diffractive optical elements) and optical smoothing techniques. In parallel we are starting a study on laser induced damages mechanisms in crystal. With DOE and microlens arrays we plan to guarantee to the beam a supergaussian shape. Simulation and first experiments with both optical systems show that a flat top spatial profile with less than 10% fluctuations and a 8th order supergaussian is possible with the present technology.Optical smoothing will keep the beam free of hot spots. We especially focused on the smoothing techniques involving optical fibers. This is the first time to our knowledge that this technique is applied to the pumping beams forTi:Sapphire systems. A deep study of laser-crystal interaction will allow us to fully understand the damages created by hot spots. The knowledge of the phenomena involved in laser damages on Ti:Sapphire is mandatory to control the pumping processes and thresholds. In conclusion, mixing the advantages of these different approaches to overcome this bottleneck will allow us to amplify in a safety way femtosecond laser beams to the Petawatt level using Ti:Sapphire crystals.

Published
2006
Full Text
View/download PDF

5. Architecture of a blue high contrast multiterawatt ultrashort laser

Author

L. D. Mikheev, Philippe Spiga, V. Mislavskii, V. Tcheremiskine, G. Coustillier, Olivier Uteza, Gilles Chériaux, Marc Sentis, R. Clady, M. Gastaud, Jean-Paul Chambaret, Gastaud, Michel, Laboratoire Lasers, Plasmas et Procédés photoniques (LP3), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Photochemical Processes Laboratory, P. N. Lebedev Physical Institute of the Russian Academy of Sciences [Moscow] (LPI RAS), Russian Academy of Sciences [Moscow] (RAS)-Russian Academy of Sciences [Moscow] (RAS), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], 010302 applied physics, Chirped pulse amplification, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Blue laser, Materials science, Physics and Astronomy (miscellaneous), business.industry, Amplifier, General Engineering, General Physics and Astronomy, Nonlinear optics, Second-harmonic generation, Laser, 01 natural sciences, law.invention, 010309 optics, Optics, law, 0103 physical sciences, Femtosecond, business, Ultrashort pulse
Abstract

The strategy used to develop an innovative high contrast multiterawatt femtosecond laser chain based on a hybrid (solid/gas) technology is reported. The laser system includes a Ti:sapphire oscillator generating 50 fs pulses at 950 nm, an optical parametric chirped pulse amplification stage, a second harmonic frequency converter for pulse temporal cleaning, and a final photolytical XeF(C–A) excimer amplifier for direct high peak-power amplification of ultrashort laser pulses in the blue (475 nm) spectral region. Several important issues concerning the design of the laser front-end, the energy extraction and beam phase control in the high peak-power XeF(C–A) amplifier are theoretically addressed. A detailed description of the XeF(C–A) amplifier and careful measurements of its energetic, optical and pumping characteristics are also given, together with the first pilot amplification experiments in the low density XeF(C–A) medium to assert the significance of our approach.

Published
2005
Full Text
View/download PDF

6. Adaptive wavefront correction on a 100-TW/10-Hz chirped pulse amplification laser and effect of residual wavefront on beam propagation

Author

Thomas A. Planchon, Frédéric Burgy, Jean-Paul Chambaret, J.-P. Rousseau, Gilles Chériaux, 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
Chirped pulse amplification, 01 natural sciences, Deformable mirror, law.invention, 010309 optics, Propagation calculation, Optics, law, 0103 physical sciences, Focal length, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, Adaptive optics, CPA lasers, 010302 applied physics, Wavefront, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Wavefront sensor, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, PACS 42.55.−f, 42.15, 42.60.−v, business, Ultrashort pulse
Abstract

International audience; We demonstrate the wavefront correction of a 100-TW (25 fs, 2.5 J) high repetition rate Ti:sapphire laser. A 36-actuator bimorph deformable mirror was used under vacuum and the adaptive optic system is working at 10 Hz in a closed-loop configuration with a Shack–Hartmann wavefront sensor. We also numerically studied the effects of the deformable mirror actuators on laser beam free propagation to determine the ideal position of the deformable mirror in the laser chain. Our ability to focus the beam was improved to near-diffraction-limited quality and intensity as high as 1.4 × 10^20 W/cm^2 was reached with a 500-mm focal length off-axis parabolic mirror.

Published
2005
Full Text
View/download PDF

7. ASE contrast improvement with a non-linear filtering Sagnac interferometer

Author

Jean-Paul Chambaret, Thierry Auguste, Amandine Renault, Pascal D'Oliveira, Thomas A. Planchon, Frédérika Augé-Rochereau, Gilles Chériaux, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Amplitude Technologies, Centre d'Etudes de Saclay, and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
Amplified spontaneous emission, media_common.quotation_subject, 02 engineering and technology, 01 natural sciences, Ultrashort pulses, law.invention, Non-linear filter, 010309 optics, 020210 optoelectronics & photonics, Optics, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Contrast (vision), Electrical and Electronic Engineering, Physical and Theoretical Chemistry, media_common, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Pulse (signal processing), business.industry, PACS 42.60.By, 42.62, 42.65.Re, 42.65.-k, 07.60.L, Contrast, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Interferometry, Orders of magnitude (time), business, Sagnac interferometer, Ultrashort pulse, Gaussian beam
Abstract

International audience; A new method to improve the temporal contrast of an ultra-short laser pulse has been developed. This technique uses a Sagnac interferometer in combination with a non-linear medium. A phase shift induced in the ultra-short pulse by non-linear effect separates it from the amplified spontaneous emission background. Experiments with a 1 kHz, 55 fs, 1 mJ Ti:Sa laser were performed. The temporal contrast measurements have shown a contrast improvement of four orders of magnitude.

Published
2005
Full Text
View/download PDF

8. 3D Modeling of amplification processes in CPA laser amplifiers

Author

Frédéric Burgy, J.-P. Rousseau, Thomas A. Planchon, and Jean Paul Chambaret

Subjects
Chirped pulse amplification, Quantum optics, Diffraction, Materials science, Physics and Astronomy (miscellaneous), business.industry, General Engineering, General Physics and Astronomy, Nonlinear optics, Self-focusing, Laser, law.invention, Optics, law, Dispersion (optics), business, Beam (structure)
Abstract

We present here chirped pulse amplification simulations allowing for the extension of the generally used 1D model. The importance of the beam spatial profiles, diffraction and thermal effects in simulations is clearly shown in order to describe with accuracy the gain saturation. Experimental measurements performed on a 100 TW laser validate this calculation. The effects of dispersion and self-focusing are also studied.

Published
2005
Full Text
View/download PDF

9. Practicability of protontherapy using compact laser systems

Author

Claude Albaret, Andre Antonetti, G. Grillon, Erik Lefebvre, Sven Fritzler, Emmanuel d'Humières, Victor Malka, Régis Ferrand, S. Meyroneinc, Jean-Paul Chambaret, Daniele Hulin, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Département de Physique Théorique et Appliquée (DPTA), 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)-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), Centre de Protonthérapie d'Orsay (CPO), and Centre de Protonthérapie d'Orsay

Subjects
numerical analysis, Proton, Physics::Medical Physics, Biophysics, Nanotechnology, radiation therapy, 01 natural sciences, Biophysical Phenomena, Collimated light, laser applications in medicine, PACS 87.53.Bn, 87.56.J, 42.62.Be, 010305 fluids & plasmas, law.invention, Radiotherapy, High-Energy, Acceleration, Optics, law, Neoplasms, 0103 physical sciences, Proton Therapy, Humans, cancer, Computer Simulation, proton accelerators, Nuclear Experiment, 010306 general physics, Laser beams, foils, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, High intensity, General Medicine, Laser, proton beams, Cancer treatment, [PHYS.PHYS.PHYS-MED-PH]Physics [physics]/Physics [physics]/Medical Physics [physics.med-ph], Physics::Accelerator Physics, Laser Therapy, Radiotherapy, Conformal, business, Beam (structure)
Abstract

Protontherapy is a well-established approach to treat cancer due to the favorable ballistic properties of proton beams. Nevertheless, this treatment is today only possible with large scale accelerator facilities which are very difficult to install at existing hospitals. In this article we report on a new approach for proton acceleration up to energies within the therapeutic window between 60 and 200 MeV by using modern, high intensity and compact laser systems. By focusing such laser beams onto thin foils we obtained on target intensities of 6×10 19 W/cm 2 , which is sufficient to produce a well-collimated proton beam with an energy of up to 10 MeV. These results are in agreement with numerical simulations and indicate that proton energies within the therapeutic window should be obtained in the very near future using such economical and very compact laser systems. Hence, this approach could revolutionize cancer treatment by bringing the “lab to the hospital—rather than the hospital to the lab.”

Published
2004
Full Text
View/download PDF

10. Design and current progress of the Apollon 10 PW project

Author

M. Pina, Gilles Chériaux, J.-M. Boudenne, J.P. Zou, Gabriel Mennerat, François Amiranoff, C. Le Blanc, F. Mathieu, D Badarau, J. Veray, Antoine Freneaux, Dimitrios Papadopoulos, Patricia Ramirez, Fabio Giambruno, Jean Paul Chambaret, T Valloton, P. Audebert, Pierre Martin, Frédéric Druon, D. Fournet, Jean-Luc Paillard, Patrick Georges, L Lecherbourg, F Leconte, P. Monot, Alain Pellegrina, 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 ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ), 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 Charles Fabry / Lasers, Laboratoire Charles Fabry ( LCF ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interactions, Dynamique 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 ), 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), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-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), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)

Subjects
Nuclear and High Energy Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Computer science, Electrical engineering, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, Electronic, Optical and Magnetic Materials, Power (physics), Nuclear Energy and Engineering, Shot (pellet), 0103 physical sciences, Current (fluid), 010306 general physics, business
Abstract

International audience; The objective of the Apollon project is the generation of 10 PW peak power pulses of 15 fs at 1 shot/minute. In this paper the Apollon facility design, the technological challenges and the current progress of the project will be presented.

Published
2015
Full Text
View/download PDF

11. High-power diode-pumped Yb:GdCOB laser: from continuous-wave to femtosecond regime

Author

Jean-Paul Chambaret, Gérard Aka, F. Auge, Sébastien Chénais, A. Aron, Margherita Zavelani-Rossi, François Balembois, F. Mougel, Clemens Hönninger, François Salin, Daniel Vivien, F. Druon, Antoine Courjaud, Alain Brun, Patrick Georges, Laboratoire Charles Fabry de l'Institut d'Optique / Elsa, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Amplitude Systèmes, Centre d'Etudes Lasers Intenses et Applications (CELIA), Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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), Laboratoire de Chimie Appliquée de l'État Solide (LCAES), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, Laser diode, Infrared, business.industry, Organic Chemistry, Slope efficiency, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Inorganic Chemistry, Wavelength, Optics, law, Femtosecond, Continuous wave, Emission spectrum, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, business, ComputingMilieux_MISCELLANEOUS, Spectroscopy
Abstract

International audience; We present an efficient tunable continuous-wave diode-pumped Yb3+:Ca4GdO(BO3)3 (Yb:GdCOB) laser producing at room temperature up to 3.2 W average power with a slope efficiency of 80% when pumped with a 10 W laser diode. A large tunability from 1017 to 1086 nm is obtained. The broad emission spectrum has been used to develop a diode-pumped Yb:GdCOB femtosecond laser. The laser generated 90 fs pulses, at a center wavelength of 1045 nm. By using a semiconductor saturable absorber mirror (SESAM) for the mode locking, the average power was 40 mW and the repetition rate of 100 MHz.

Published
2002
Full Text
View/download PDF

12. The current status of the Apollon-10P project (orale)

Author

Dimitrios Papadopoulos, Gilles Cheriaux, Catherine Leblanc, patrick Audebert, J-P, Zou, Gabriel Mennerat, Frédéric Druon, Alain Pellegrina, Patricia Ramirez, Fabio Giambruno, Antoine Freneaux, Leconte, F., Badarau, D., M Boudenne, J., Fournet, D., Valloton, T., Jean-Luc Paillard, Veray, J., Pina, M., Monot, P., Martin, P., Jean Paul Chambaret, Mathieu, F., Audebert, P., François Amiranoff, 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), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2014

13. Apollon 10PW project : an upcoming ultra-intense facility (orale)

Author

J-P, Zou, Catherine Leblanc, Dimitrios Papadopoulos, Gilles Chériaux, patrick Audebert, Gabriel Mennerat, Frédéric Druon, Alain Pellegrina, Patricia Ramirez, Fabio Giambruno, Fréneaux, A., Leconte, F., Badarau, D., M Boudenne, J., Audebert, P., Fournet, D., Valloton, T., Greverie, C., Jean-Luc Paillard, Veray, J., Pina, M., Monot, P., Martin, P., Mathieu, F., Jean Paul Chambaret, François Amiranoff, 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), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-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, and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2014

14. Multiwatt, tunable, diode-pumped CW Yb:GdCOB laser

Author

Gaëlle Lucas-Leclin, Jean-Paul Chambaret, Alain Brun, Patrick Georges, Margherita Zavelani-Rossi, Daniel Vivien, F. Druon, Sébastien Chénais, F. Auge, François Balembois, and Gérard Aka

Subjects
Quantum optics, Wavefront, Materials science, Physics and Astronomy (miscellaneous), business.industry, Far-infrared laser, General Engineering, General Physics and Astronomy, Laser, law.invention, Resonator, Optics, law, Optoelectronics, M squared, business, Beam (structure), Diode
Abstract

We demonstrate that Yb-doped Ca4GdO(BO3)3 (GdCOB) crystals are suitable for the development of high-power diode-pumped lasers emitting at around 1.04 μm. A 15%-doped Yb:GdCOB crystal was longitudinally pumped with a cw fiber-coupled diode emitting 10 W at 976 nm. While 5.2 W of diode power was absorbed, we obtained 3.2 W of 1043-μm laser light, with a beam quality factor M2 equal to 3, and 2.5 W in a diffraction-limited beam. Furthermore, the laser is continuously tunable between 1018 and 1086 nm. Thermal effects have been investigated with a Shack–Hartmann wavefront analyser: although thermal lensing is not negligible, it does not affect the performance of the laser with the resonator design we used.

Published
2001
Full Text
View/download PDF

15. Single-shot spectral interferometry of femtosecond laser-produced plasmas

Author

J. C. Gauthier, Jean Paul Chambaret, S. Rebibo, P. Audebert, G. Grillon, and J. P. Geindre

Subjects
Wavefront, Materials science, business.industry, Plasma, Condensed Matter Physics, Laser, Atomic and Molecular Physics, and Optics, Pulse (physics), law.invention, Interferometry, symbols.namesake, Fourier transform, Optics, law, Femtosecond, symbols, Plasma diagnostics, Electrical and Electronic Engineering, business
Abstract

We use both a Fourier-transform-based analysis and time-retrieval calculations to get time-resolved measurements of the reflectivity and the phase shift of a chirped probe pulse interacting with a fs-laser-produced plasma by spectral interferometry in a single shot. We have devised a novel dual-quadrature Mach–Zehnder configuration in which wavefront division is used to obtain spatial fringes from the perturbed and unperturbed probe simultaneously. We demonstrate the capability of this technique with fully analyzed experimental data on the interaction of a femtosecond laser with C3H6 and C samples, showing 35-fs time resolution.

Published
2001
Full Text
View/download PDF

16. Characterization of chirped-pulse amplification systems with spectral phase interferometry for direct electric-field reconstruction

Author

Jean-Philippe Rousseau, François Salin, C. Le Blanc, Christophe Dorrer, Jean-Paul Chambaret, S. Ranc, P. Rousseau, and B. de Beauvoir

Subjects
Chirped pulse amplification, Physics, Physics and Astronomy (miscellaneous), business.industry, Detector, General Engineering, Phase (waves), General Physics and Astronomy, Pulse duration, Spectral phase interferometry for direct electric-field reconstruction, Pulse (physics), Interferometry, Optics, business, Ultrashort pulse
Abstract

The characterization and optimization of chirped-pulse amplification systems with spectral phase interferometry for direct electric-field reconstruction is presented. Using a single-shot real-time implementation of this technique, the sensitivity of pulse duration to air turbulence in the stretcher and compressor has been quantitatively measured. A modification of this technique, allowing the simultaneous single-shot real-time measurement of both the spectral phase and the amplitude of a short pulse with a monodimensional detector, is also demonstrated.

Published
2000
Full Text
View/download PDF

17. Importance of spatial quality of intense femtosecond pulses

Author

J.-P. Rousseau, Serge Ferré, S. Ranc, Gilles Chériaux, and Jean-Paul Chambaret

Subjects
Femtosecond pulse shaping, Chirped pulse amplification, Quantum optics, High peak, Materials science, Physics and Astronomy (miscellaneous), business.industry, General Engineering, General Physics and Astronomy, Spatial quality, Optics, Quality (physics), Femtosecond, business, Ultrashort pulse
Abstract

The spatial quality of intense femtosecond pulses from chirped pulse amplification (CPA) systems is of great importance in order to reach very high peak intensity on the target. We review various aspects of this quality, present results obtained all along a CPA chain and discuss improvement implemented or still to be implemented.

Published
2000
Full Text
View/download PDF

18. The Apollon-10P project: Design and current status (poster)

Author

Dimitrios Papadopoulos, Catherine Leblanc, Gilles Chériaux, patrick Audebert, J-P, Zou, Gabriel Mennerat, Frédéric Druon, Alain Pellegrina, Patricia Ramirez, Fabio Giambruno, Antoine Freneaux, Leconte, F., Badarau, D., M Boudenne, J., Audebert, P., Fournet, D., Valloton, T., Greverie, C., Jean-Luc Paillard, Veray, J., Pina, M., Monot, P., Martin, P., Mathieu, F., Jean Paul Chambaret, François Amiranoff, 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), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Institut Rayonnement Matière de Saclay (IRAMIS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2013

19. Progress on the Apollon-10PW laser facility (orale)

Author

Catherine Leblanc, Gilles Cheriaux, patrick Audebert, J-P, Zou, Gabriel Mennerat, Frédéric Druon, Dimitrios Papadopoulos, Alain Pellegrina, Patricia Ramirez, Fabio Giambruno, Antoine Freneaux, Leconte, F., Badarau, D., Boudenne, J. M., Audebert, P., Fournet, D., Valloton, T., Jean-Luc Paillard, Veray, J., Pina, M., Monot, P., Martin, P., Mathieu, F., Jean Paul Chambaret, François Amiranoff, 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), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-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, and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2013

20. Multi-pass amplification of sub-50 fs pulses up to the 4 TW level

Author

Gilles Chériaux, P. Curley, Jean-Paul Chambaret, Andre Antonetti, Pascal Rousseau, F. Salin, C. Le Blanc, and G. Darpentigny

Subjects
Materials science, business.industry, Amplifier, Curved mirror, Transmission bandwidth, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Optics, law, Compression (functional analysis), Sapphire, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, business
Abstract

We describe the design and operation of a 2-stage multi-pass Ti:sapphire amplifier laser system, which is optimised for a broad transmission bandwidth and incorporates a novel reflective spherical mirror pulse-stretcher. Output energies of 180 mJ after compression, and amplified bandwidths up to 30 nm are observed.

Published
1996
Full Text
View/download PDF

21. The Apollon-10P project: Design and current status

Author

J.-M. Boudenne, F. Mathieu, C. Greverie, François Amiranoff, J.P. Zou, T Valloton, Gilles Chériaux, P. Audebert, Alain Pellegrina, M. Pina, D Badarau, F Leconte, P. Monot, Gabriel Mennerat, Catherine Leblanc, Antoine Freneaux, Patricia Ramirez, Fabio Giambruno, Jean Paul Chambaret, Jean-Luc Paillard, Patrick Georges, J. Veray, Dimitrios Papadopoulos, Paloma Martín, Frédéric Druon, D. Fournet, 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), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Institut Rayonnement Matière de Saclay (IRAMIS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, High power lasers, Regenerative amplification, Electronic engineering, Current (fluid), Duration (project management), ComputingMilieux_MISCELLANEOUS, Project design
Abstract

International audience; The principal objective of Apollon-10P project is the generation of 10 PW peak power pulses of 15 fs duration at 1 shot/minute. The technological challenges and the current status of the Apollon laser system are discussed in detail.

Published
2013
Full Text
View/download PDF

22. High dynamic range autocorrelation studies of a femtosecond Ti: sapphire oscillator and its relevance to the optimisation of chirped pulse amplification systems

Author

Jean Paul Chambaret, Andre Antonetti, P. Curley, Gilles Chériaux, and G. Darpentigny

Subjects
Chirped pulse amplification, Materials science, Optical autocorrelation, Dynamic range, business.industry, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Pedestal, Optics, law, Femtosecond, Sapphire, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, business, High dynamic range
Abstract

We report on background-free intensity autocorrelation studies of sub-50 fs pulses from a Kerr lens mode-locked (KLM) Ti: sapphire laser over an intensity dynamic range of approximately 7 orders of magnitude. Results reveal the presence of a low intensity pedestal, at the 10 −5 level, which can be improved by incorporating a hard aperture in the cavity. We also present the results derived from a ray tracing code used to investigate the propagatin of pulses through a cylindrical mirror stretcher/compressor. The strong dependence of the residual pedestal level with initial pulse bandwidth and spectral clipping is discussed. The various limiting effects of both the seed oscillator and the stretcher/compressor on the final pedestal intensity level in the linear amplification regime are discussed.

Published
1995
Full Text
View/download PDF

23. Bulk laser-induced damage threshold of titanium-doped sapphire crystals

Author

L. Vigroux, Nicolas Sanner, Olivier Uteza, Jean-Yves Natoli, Mireille Commandré, G. Riboulet, Marc Sentis, Benoît Bussiere, Jean Paul Chambaret, Frank Wagner, Laboratoire Lasers, Plasmas et Procédés photoniques (LP3), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), ILM (ILM), Institut FRESNEL (FRESNEL), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-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), Université du Québec en Abitibi-Témiscamingue (UQAT), Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Centre National de la Recherche Scientifique (CNRS)-École Centrale de Marseille (ECM)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Marseille (ECM)-Aix Marseille Université (AMU), and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)

Subjects
Materials science, genetic structures, Physics::Instrumentation and Detectors, Physics::Optics, 02 engineering and technology, 01 natural sciences, Fluence, law.invention, 010309 optics, X-ray laser, Optics, law, 0103 physical sciences, Physics::Atomic Physics, Electrical and Electronic Engineering, Engineering (miscellaneous), ComputingMilieux_MISCELLANEOUS, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Far-infrared laser, Ti:sapphire laser, Nanosecond, 021001 nanoscience & nanotechnology, Laser, Atomic and Molecular Physics, and Optics, Femtosecond, Sapphire, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, sense organs, 0210 nano-technology, business
Abstract

International audience; The bulk laser-induced damage threshold (LIDT) fluence of Ti:sapphire is determined under single-pulse irradiation from the femtosecond to nanosecond temporal regimes in the visible and near-infrared spectral domains. In the range of explored laser conditions, the LIDT fluence increases with both pulse duration and wavelength. The results are also compared to laser interaction with sapphire samples and show an increased resistance to laser damage when the material is doped with Ti3+ ions. These conclusions are of interest for robust operation of high-peak-power femtosecond Ti: sapphire laser chains. (C) 2012 Optical Society of America

Published
2012
Full Text
View/download PDF

24. Largely tunable diode-pumped sub-100-fs Yb:BOYS laser

Author

Romain Gaume, G. Aka, Patrick Georges, D. Kopf, Bruno Viana, Jean-Paul Chambaret, Sébastien Chénais, F. Druon, S. Mohr, François Balembois, D. Vivien, and P. Raybaut

Subjects
Quantum optics, Materials science, Physics and Astronomy (miscellaneous), business.industry, General Engineering, General Physics and Astronomy, Laser, law.invention, Power (physics), Crystal, Optics, law, Femtosecond, business, Diode
Abstract

We demonstrate for the first time the use of a new crystal, Yb:BOYS, in a femtosecond oscillator. Pulses as short as 69 fs have been obtained at 1062 nm with an average power of 80 mW and with a tunability of 25 nm. Higher average power Yb:BOYS mode-locked oscillators have also been studied. Pulses of 86 fs with an average power of 300 mW have been produced at 1068 nm.

Published
2002
Full Text
View/download PDF

25. Ti-Doped Sapphire (Al(2)O(3)) Single Crystals Grown by the Kyropoulos Technique and Optical Characterizations

Author

Abdeldjelil Nehari, Alain Brenier, Gerard Panzer, Kheireddine Lebbou, Jerome Godfroy, Serge Labor, Herve Legal, Gilles Chériaux, Jean Paul Chambaret, Theirry Duffar, Richard Moncorgé, Laboratoire de Physico-Chimie des Matériaux Luminescents (LPCML), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), RSA RUBIS DSA, RAS RUBIS, École polytechnique (X), Institut de la Lumiére Extrême (ILE), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Science et Ingénierie des Matériaux et Procédés (SIMaP), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physico-Chimie des Matériaux Luminescents ( LPCML ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ), École polytechnique ( X ), Institut de la Lumiére Extrême ( ILE ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -École Nationale Supérieure de Techniques Avancées ( Univ. Paris-Saclay, ENSTA ParisTech ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), Science et Ingénierie des Matériaux et Procédés ( SIMaP ), Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut polytechnique de Grenoble - Grenoble Institute of Technology ( Grenoble INP ) -Institut National Polytechnique de Grenoble ( INPG ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ), Centre de recherche sur les Ions, les MAtériaux et la Photonique ( CIMAP - UMR 6252 ), Université de Caen Normandie ( UNICAEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -Ecole Nationale Supérieure d'Ingénieurs de Caen ( ENSICAEN ), Normandie Université ( NU ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Centre National de la Recherche Scientifique ( CNRS ), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), and Normandie Université (NU)

Subjects
Materials science, Crystal chemistry, Annealing (metallurgy), chemistry.chemical_element, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, law.invention, chemistry.chemical_compound, Optics, law, General Materials Science, business.industry, Doping, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Laser, Optical quality, 0104 chemical sciences, chemistry, [ CHIM.MATE ] Chemical Sciences/Material chemistry, Aluminium oxide, Sapphire, Optoelectronics, 0210 nano-technology, business, Titanium
Abstract

International audience; Transparent high optical quality and large Ti-sapphire (Ti(3+)-doped Al(2)O(3)) single crystals have been grown by the Kyropoulos technique (KT) for optical amplification. The present work shows that by the utilization of KT growth technology and the optimization of the growth conditions it is possible to grow Ti-doped Al(2)O(3), 100 mm in diameter and 5 kg in weight. We have demonstrated that large Ti(0.25 atom %)-doped Al(2)O(3) crystals show high chemical homogeneities and good optical properties and amplify the energy without any special annealing. Ti-doped sapphire crystals are for high power laser applications and particularly for the shortest pulses ever produced from a laser oscillator.

Published
2011
Full Text
View/download PDF

26. LASERIX : an open facility for developments of EUV and soft X-ray lasers and applications

Author

O. Guilbaud, Kevin Cassou, D. Zimmer, Gilles Maynard, Vincent Bagnoud, S. de Rossi, Gerard Jamelot, Moana Pittman, Denis Joyeux, David Ros, F. Delmotte, M.-A. du Penhoat, A. Touati, Sophie Kazamias, J.-C. Lagron, J. Demailly, J. Habib, O. Neveu, S. Daboussi, Brigitte Cros, Erika Porcel, Annie Klisnick, Gerard Mourou, Ph. Zeitoun, François Mathieu, C. Le Sech, Jean Paul Chambaret, Bernhard Zielbauer, Sandrine Lacombe, and Thomas Kuehl

Subjects
Soft x ray, Materials science, Open facility, law, business.industry, Extreme ultraviolet lithography, Extreme ultraviolet, Sapphire, Optoelectronics, Laser, business, Laser beams, law.invention
Abstract

LASERIX is a high-power laser facility delivering High-repetition-rate XUV laser beams pumped by Titanium:Sapphire laser. The aim of this laser facility is to offer to the users community Soft XRLs in the 30-7 nm range and auxiliary IR beam for a broad range of applications. In this contribution, the main results concerning both the development of XUV sources and their use for applications (irradiation of DNA samples) are presented, as well the present status and some perspectives for LASERIX.

Published
2011
Full Text
View/download PDF

27. Double ionization in the perturbative and tunneling regimes

Author

Pierre Agostini, Eric Mével, Baorui Yang, Andre Antonetti, Barry C. Walker, Jean-Paul Chambaret, Pierre Breger, and Louis F. DiMauro

Subjects
Physics, Double ionization, chemistry.chemical_element, Photoionization, Atomic and Molecular Physics, and Optics, Spectral line, Ion, Xenon, chemistry, Ionization, Physics::Atomic and Molecular Clusters, Physics::Atomic Physics, Atomic physics, Circular polarization, Quantum tunnelling
Abstract

We have studied the doubly charged ion yields and electron energy spectra (normal and coincidence) for double ionization of atoms in two different ionization regimes (perturbative and tunneling). In both cases, the double-ionization rates appear to be anomalously large in some intensity range and strongly reduced by circular polarization. It is argued that these similar behaviors must result from different physical mechanisms.

Published
1993
Full Text
View/download PDF

28. Atoms in strong optical fields: Evolution from multiphoton to tunnel ionization

Author

Pierre Agostini, Eric Mevel, Guillaume Petite, Jean-Paul Chambaret, Rusty Trainham, Andre Antonetti, Arnold Migus, and Pierre Breger

Subjects
Physics, General Physics and Astronomy, chemistry.chemical_element, Photoionization, Spectral line, Tunnel effect, Xenon, Tunnel ionization, chemistry, Ionization, Physics::Atomic and Molecular Clusters, Physics::Atomic Physics, Atomic physics, Electron ionization, Helium
Abstract

Electron energy spectra from ionization of the noble gases by 617-nm, 100-fs intense laser pulses show that the periodical double structure of narrow Stark-induced resonances and above-threshold ionization disappears gradually from xenon to helium. This implies that shifts and widths become of the order of the atomic-orbital frequencies, as expected at the onset of the tunneling regime.

Published
1993
Full Text
View/download PDF

29. Extreme light infrastructure: laser architecture and major challenges

Author

Karoly Osvay, G. Mourou, Gábor Szabó, Péter Dombi, W. Sandner, C. Le Blanc, A. M. Dunne, Joachim Hein, François Mathieu, Zs. Major, Razvan Dabu, Bedřich Rus, C. J. Hooker, Patrick Georges, Jean-Paul Chambaret, Cristina Hernandez-Gomez, Katalin Varjú, Georg Korn, Ferenc Krausz, John R. Collier, Stefan Karsch, Gilles Chériaux, Daniel Ursescu, Klaus Ertel, Thomas Metzger, P. V. Nickles, János Hebling, and Oleg Chekhlov

Subjects
Physics, Iterative and incremental development, Extreme Light Infrastructure, business.industry, Attosecond, Laser, Engineering physics, law.invention, Chemical species, Optics, law, Limit (music), High field, Architecture, business
Abstract

Extreme Light Infrastructure (ELI), the first research facility hosting an exawatt class laser will be built with a joint international effort and form an integrated infrastructure comprised at last three branches: Attosecond Science (in Szeged, Hungary) designed to make temporal investigation at the attosecond scale of electron dynamics in atoms, molecules, plasmas and solids. High Field Science will be mainly focused on producing ultra intense and ultra short sources of electons, protons and ions, coherent and high energetic X rays (in Prague, Czech Republic) as well as laserbased nuclear physics (in Magurele, Romania). The location of the fourth pillar devoted to Extreme Field Science, which will explore laser-matter interaction up to the non linear QED limit including the investigation of vacuum structure and pair creation, will be decided after 2012. The research activities will be based on an incremental development of the light sources starting from the current high intensity lasers (APOLLON, GEMINI, Vulcan and PFS) as prototypes to achieve unprecedented peak power performance, from tens of petawatt up to a fraction of exawatt (1018 W). This last step will depend on the laser technology development in the above three sites as well as in current high intensity laser facilities.

Published
2010
Full Text
View/download PDF

30. Search for Stimulated Photon-Photon Scattering in Vacuum

Author

François Amiranoff, A. Braun, F. Perrone, D. Bernard, Jean-Paul Chambaret, G. Grillon, F. Moulin, S. Ranc, and G. Darpentigny

Subjects
Elastic scattering, Physics, Photon, Scattering, Optical physics, FOS: Physical sciences, Photon energy, Atomic and Molecular Physics, and Optics, Four-wave mixing, Center of mass, Stimulated emission, Atomic physics, Particle Physics - Experiment, Physics - Optics, Optics (physics.optics)
Abstract

We have searched for stimulated photon scattering in vacuum at a center of mass photon energy of 0.8 eV. The QED contribution to this process is equivalent to four wave mixing in vacuum. No evidence for gamma-gamma scattering was observed. The corresponding upper limit of the cross section is sigma_Lim=1.5 10^{-48}cm2., Comment: 6 figures

Published
2010
Full Text
View/download PDF

31. Pre-chirp control in broadband non-collinear optical parametric amplifier

Author

Lei Shen, Dimitris Papadopoulos, Frederic Druon, Jean-Paul Chambaret, and Dan Dumitras

Subjects
Optical amplifier, Physics, business.industry, Bandwidth (signal processing), Laser, Optical parametric amplifier, law.invention, Optics, law, Broadband, Chirp, Optoelectronics, business, Ultrashort pulse, Parametric statistics
Abstract

Based on the OPCPA system for Ti:Sapphire laser, we find a new good noncollinear broad bandwidth phase matching geometry. We also proposed one method to use pre‐chirp to compensate the GVM and GVD to maximize the parametric bandwidth.

Published
2010
Full Text
View/download PDF

32. Extreme Light Infrastructure (ELI): Physics and Lasers at the ultra-intense frontier

Author

Bedrich Rus, Sergei V. Bulanov, Ferenc Krausz, Georg Kornl, Wolfgang Sandner, Gerard Mourou, Jean-Paul Chambaret, Peter V. Nickles, Karoly Osvay, Dimitrios Charambilidis, Klaus Ertel, Stefan Karsch, John Collier, Joachim Hein, G. D. Tsakiris, Mike Dunne, and Toshiki Tajima

Subjects
Physics, Photon, Extreme Light Infrastructure, business.industry, Attosecond, Particle accelerator, Laser, law.invention, Particle acceleration, Optics, law, Harmonics, business, Ultrashort pulse
Abstract

ELI has been put on the European Roadmap for Research infrastructures by the European Strategy Forum on Research Infrastructures (ESFRI). It will be the first Paneuropean Infrastructure utilizing an ultra-intense laser with a peak-power of 200 PW for interaction experiments with electric field strength well above the PV/m (1015 V/m ). With the high focused intensity (above 4 × 1024W/cm2) it will be possible to enter the ultra-relativistic regime when protons are accelerated to nearly the speed of light at a distance in the order of the wavelength of the driving extreme light. Fundamental physics phenomena can be investigated for the first time including nonlinear vacuum interaction and pair generation. ELI intermediate beam lines with peak-powers in the few PW range but higher repetition rates (10 Hz) will enable scientific and societal including medical applications based on laser particle acceleration (proton therapy) and x-ray generation. The photonuclear facility will explore nuclei with hard x-ray and gamma-ray photons produced by high intensity interaction with matter. The Attosecond science laser driver with its high repetition rate (1 kHz) and high average power (>1 kW, 5–10fs) opens the way to ultrafast investigations in different scientific and technological areas with time resolutions in the Attosecond and may by even faster (zeptosecond) time domains using very brilliant VUV-light and x-rays generated by harmonics from gases or solids.

Published
2010
Full Text
View/download PDF

33. Contrasted behaviour of Stark-induced resonances in multiphoton ionization of krypton

Author

Eric Mével, Pierre Breger, R. Trainham, A. Antonetti, Pierre Agostini, Arnold Migus, Guillaume Petite, and Jean-Paul Chambaret

Subjects
Physics, Range (particle radiation), Krypton, Resonance, chemistry.chemical_element, Photon energy, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Spectral line, Intensity (physics), chemistry, Ionization, Excited state, Physics::Atomic Physics, Atomic physics
Abstract

Electron energy spectra from multiphoton ionization of krypton with 617 nm, 70 fs pulses have been recorded over a large intensity range. Near the appearance intensity, the spectra display Stark-induced resonances with s and d states. Up to about 8*1013 W cm-2, the spectra broaden and the structures are progressively washed out. Above this intensity, a strong resonance emerges, corresponding to the 4f state for which the static detuning is 2.94 eV, a value larger than the photon energy. The influence of a large static detuning and populations of excited states with shifts different from the threshold shift are discussed.

Published
1992
Full Text
View/download PDF

34. Broadband femtosecond infrared parametric amplification in beta-BaB(2)O(4)

Author

Pierre Agostini, Guillaume Petite, W. Joosen, Jean-Paul Chambaret, and Andre Antonetti

Subjects
Optics, Materials science, Infrared, Solid-state laser, business.industry, Femtosecond, Optical parametric oscillator, Laser pumping, Parametric oscillator, business, Optical parametric amplifier, Ultrashort pulse, Atomic and Molecular Physics, and Optics
Abstract

Infrared femtosecond pulses of 100 μJ of energy are generated in a two-stage, triple-pass, type I β-barium borate parametric amplifier. A focusable intensity of 5 × 1012 W/cm2 with an f/20 optic is demonstrated.

Published
2009

35. Perspectives of XUV sources development on LASERIX facility, ILE, and ELI

Author

Brigitte Cros, Sophie Kazamias, J. Gautier, Gilles Maynard, D. Zimmer, Stephane Sebban, Jean-Paul Chambaret, T. Kuhl, Bernhard Zielbauer, Annie Klisnick, Gerard Mourou, J. C. Lagron, Ph. Zeitoun, Bedřich Rus, S. Jacquemot, S. de Rossi, J. Habib, Kevin Cassou, P. Audebert, Moana Pittman, David Ros, and Olivier Guilbaud

Subjects
Physics, Optics, Extreme Light Infrastructure, business.industry, law, Extreme ultraviolet, business, Laser, Engineering physics, law.invention
Abstract

In this paper we present the perspectives of the development of the XUV laser sources using High-power laser facilities. We focus our paper on the present statuts of the LASERIX facility and especially its role in the development of the XUV laser sources considering the French "Institut de la Lumiere Extreme" (ILE) and the potential European project Extreme Light Infrastructure (ELI).

Published
2009
Full Text
View/download PDF

36. High-efficiency, broad band, high-damage threshold high-index gratings for femtosecond pulse compression

Author

Manuel Flury, Frederico Canova, Renate Fechner, Raphaël G. C. R. Clady, Olivier Parriaux, Jean-Paul Chambaret, and Svtelen Tonchev

Subjects
Diffraction, Chirped pulse amplification, Materials science, business.industry, Physics::Optics, 02 engineering and technology, 021001 nanoscience & nanotechnology, Diffraction efficiency, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, Spectral line, law.invention, 010309 optics, Optics, Machining, Pulse compression, law, 0103 physical sciences, Optoelectronics, 0210 nano-technology, business, Diffraction grating
Abstract

High efficiency, broad-band TE-polarization diffraction over a wavelength range centered at 800 nm is obtained by high index gratings placed on a non-corrugated mirror. More than 96% efficiency wide band top-hat diffraction efficiency spectra, as well as more than 1 J/cm(2) damage threshold under 50 fs pulses are demonstrated experimentally. This opens the way to high-efficiency Chirped Pulse Amplification for high average power laser machining by means of all-dielectric structures as well as for ultra-short high energy pulses by means of metal-dielectric structures.

Published
2009

37. The Extreme Light Infrastructure Project ELI and its Prototype APOLLON/ ILE: 'The associated laser bottlenecks'

Author

Patrick Cavillac, Dominique Fournet, Catherine Blanc, G. Rey, Patrick Georges, Denis Douillet, Jean Paul Chambaret, F. Mathieu, Patrick Audebert, Jean Luc Paillard, Gilles Chériaux, and Gerard Mourou

Subjects
Optics, Beamline, Spatial filter, Extreme Light Infrastructure, business.industry, law, High intensity, Nanotechnology, business, Diffraction efficiency, Laser, Deformable mirror, law.invention
Abstract

We will present the ELI Project consisting in a 200PW laser based high intensity physics users infrastructure. A French single beamline laser prototype called ILE/APOLLON is presently under construction. Associated technological bottlenecks will be described.

Published
2009
Full Text
View/download PDF

38. Laser induced damage of sapphire and titanium doped sapphire crystals under femtosecond to nanosecond laser irradiation

Author

Olivier P. Uteza, Jean-Yves Natoli, G. Riboulet, Frank Wagner, L. Vigroux, Jean-Paul Chambaret, Benoît Bussiere, Nicolas Sanner, Marc Sentis, Mireille Commandre, Laboratoire Lasers, Plasmas et Procédés photoniques (LP3), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Institut FRESNEL (FRESNEL), Centre National de la Recherche Scientifique (CNRS)-École Centrale de Marseille (ECM)-Aix Marseille Université (AMU), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), and Gallais, Laurent

Subjects
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, business.industry, Far-infrared laser, Ti:sapphire laser, Laser, 01 natural sciences, law.invention, 010309 optics, Crystal, X-ray laser, Optics, law, Picosecond, 0103 physical sciences, Femtosecond, Sapphire, business, ComputingMilieux_MISCELLANEOUS
Abstract

The use of large Ti:Sapphire crystals in ultra fast high peak power laser amplifiers makes crucial the problem of crystal laser induced damage. These works aim to quantify the laser induced damage threshold (LIDT) of Sapphire and Ti:Sapphire crystals under femtosecond, picosecond and nanosecond laser pulse irradiations, which are typically encountered in such laser chains. Furthermore, a study of the influence of cryogenic conditions on the LIDT of Ti:Sapphire crystals and of their anti-reflection coating has been performed. The results are important to understand the mechanisms leading to the damage, and to reveal the key parameters which will have to be optimized in future high peak power laser chains.

Published
2009

39. Second harmonic generation of strongly aberrated beams in DKDP and LBO

Author

M. Pittman, Hervé Albrecht, Gabriel Mennerat, Jean-Paul Chambaret, Philippe Villeval, Gilles Chériaux, Jacques Rault, Dominique Lupinski, and Bruno Rainaud

Subjects
Physics, Optics, High power lasers, business.industry, Fresnel number, Nonlinear optics, Second-harmonic generation, Nonlinear optical crystal, business
Abstract

Substituting LBO for DKDP, we demonstrate and analyze a x 1.6 enhancement in frequency doubling effciency of high-energy strongly aberrated beams.

Published
2009
Full Text
View/download PDF

40. Multielectron dissociative ionization of diatomic molecules in an intense femtosecond laser field

Author

J. Lavancier, P. Agostini, C Cornaggia, Didier Normand, J. Morellec, Andre Antonetti, and Jean-Paul Chambaret

Subjects
Physics, chemistry.chemical_classification, Field (physics), Laser, Diatomic molecule, Atomic and Molecular Physics, and Optics, law.invention, Atmospheric-pressure laser ionization, chemistry, law, Ionization, Femtosecond, Mass spectrum, Atomic physics, Inorganic compound
Published
1991
Full Text
View/download PDF

41. Use of a high spatial resolution wavefront analyser to predict intensity hot spot in a femtosecond laser chain

Author

Jean Paul Chambaret, O. Peillet, L. Bruel, D. Jacob, F. Canova, M. Le Pennec, and P. Nagtegaele

Subjects
Physics, Wavefront, genetic structures, business.industry, Analyser, Hot spot (veterinary medicine), Laser, eye diseases, Deformable mirror, law.invention, Optics, law, Femtosecond, Optoelectronics, sense organs, Adaptive optics, business, Image resolution
Abstract

We demonstrate the use of a new wavefront analyser called MIROMA in a laser chain to measure the residual spatial modulations of the beam induced by footprints of a deformable mirror and prevent optical damages.

Published
2008
Full Text
View/download PDF

42. Recent Progress in X-Ray Laser Development and Applications at LIXAM

Author

O. Larroche, F. Plé, Sophie Kazamias, Jean Paul Chambaret, Pedro Velarde, Denis Joyeux, Kevin Cassou, David Ros, J. Dubau, H. Bercego, T. Kühl, Olivier Guilbaud, C. Möller, Gerard Jamelot, Djamel Benredjem, Ph. Zeitoun, Annie Klisnick, Claes-Göran Wahlström, M. Pitmann, Bedřich Rus, and I. R. Al’Miev

Subjects
Materials science, business.industry, Laser, Interference microscopy, law.invention, X-ray laser, Optics, law, Optical materials, Pinhole camera, Transient (oscillation), business, Lasing threshold, Laser beams
Abstract

We present an overview of the recent progress achieved in the development of X-ray lasers and demonstration of applications by the LIXAM team, in collaboration with other groups. Lasing at 10 Hz was demonstrated at 18.9 nm in Ni-like Mo with a 30 µW average power, using transient pumping in the grazing incidence geometry. New numerical simulations have been developed to study spatial and temporal features of current and future X-ray lasers. The technique of interference microscopy with an X-ray laser beam was applied to the investigation of laser-induced damages in optical materials exposed to sub-ns laser pulses. Finally the construction of a 0.5 PW, 0.1 Hz Ti-Sa laser, the driver of the LASERIX facility, was successfully completed.

Published
2008
Full Text
View/download PDF

43. LASERIX: a high-repetition-rate laser facility for performing intense XUV sources

Author

Moana Pittman, Pierre Jaegle, Sophie Kazamias, O. Guilbaud, David Ros, Annie Klisnick, Gerard Mourou, P. Zeitoun, Kevin Cassou, J. C. Lagron, Stephane Sebban, Jean-Paul Chambaret, Gerard Jamelot, J. Habib, F. Ple, and A. Huetz

Subjects
Physics, Range (particle radiation), business.industry, Laser, law.invention, Wavelength, Optics, law, Extreme ultraviolet, Optoelectronics, Transient (oscillation), Irradiation, business, Collisional excitation, Beam (structure)
Abstract

LASERIX is a high power laser facility intended to realise and use for applications transient collisional excitation (TCE) X-ray lasers (XRLs) at various wavelengths, using grazing incidence pumping (GRIP) configuration with 10 Hz repetition rate. In addition new types of XRL schemes giving rise to emission at short wavelengths will be developed using the high energy LASERIX driver with 0.1 HZ rep-rate. Thus, this laser facility will both offer Soft X-ray lasers in the 40-10 nm range and synchronised auxiliary IR beam that could be also used to produce XUV sources. This experimental configuration highly enhances the scientific opportunities of the facility. Indeed it will be possible to realise both X-ray laser experiments and more generally pump/probe experiments, mixing IR and XUV sources. Then, this facility will be useful for the community, opening a large scale of investigations, including imagery and irradiation.

Published
2007
Full Text
View/download PDF

44. LASERIX: a European versatile high-rep-rate facility for applications in the XUV range

Author

Gerard Jamelot, David Ros, A. Huetz, J. Habib, J. C. Lagron, F. Ple, Gerard Mourou, Annie Klisnick, Sophie Kazamias, Pierre Jaegle, Stephane Sebban, Jean-Paul Chambaret, Moana Pittman, P. Zeitoun, O. Guilbaud, and Kevin Cassou

Subjects
Physics, Range (particle radiation), business.industry, Laser, law.invention, Interferometry, Wavelength, Optics, law, Extreme ultraviolet, Optoelectronics, Transient (oscillation), business, Collisional excitation, Beam (structure)
Abstract

LASERIX is a high power laser facility intended to realise and use for applications transient collisional excitation (TCE) X-ray lasers (XRLs) at various wavelengths, using grazing incidence pumping (GRIP) configuration with 10 Hz repetition rate. In addition new types of XRL schemes giving rise to emission at short wavelengths will be developed using the high energy LASERIX driver with 0.1 HZ rep-rate. Thus, this laser facility will both offer Soft X-ray lasers in the 40-10 nm range and synchronised auxiliary IR beam that could be also used to produce XUV sources. This experimental configuration highly enhances the scientific opportunities of the facility. Indeed it will be possible to realise both X-ray laser experiments and more generally pump/probe experiments, mixing IR and XUV sources. Then, this facility will be useful for the community, opening a large scale of investigations, including imagery and irradiation as illustrated in the case of laser Interaction with matter investigations using XUV interferometry.

Published
2007
Full Text
View/download PDF

45. Damage threshold of sapphire in short and long pulse regime

Author

Olivier Uteza, Jean Paul Chambaret, Tatiana Itina, Benoît Bussiere, Ph. Delaporte, F. Canova, and Marc Sentis

Subjects
Materials science, business.industry, Nanosecond, Laser, Fluence, law.invention, Surface micromachining, Optics, law, Femtosecond, Sapphire, Radiation damage, Irradiation, business
Abstract

The work presents the determination of the laser-induced damage threshold (LIDT) fluence of sapphire under various experimental conditions concerning the material irradiation (fs, ps and ns temporal regimes) and material preparation (surface state). The results may be used for optimising laser micromachining processes and also for studying laser crystal damage in high peak power femtosecond Ti:Sapphire laser chains.

Published
2007
Full Text
View/download PDF

47. ILE 25PW single laser beamline: the French step for the European Extreme Light Infrastructure (ELI)

Author

Moana Pittman, F. Canova, Jean-Paul Chambaret, Nicolas Forget, F. Ple, A. Cotel, C. Le Blanc, G. Cheriaux, F. Druon, Patrick Georges, Rodrigo Lopez-Martens, and Gerard Mourou

Subjects
Physics, One shot, Extreme Light Infrastructure, business.industry, Ultrafast optics, chemistry.chemical_element, Plasma, Laser, Neodymium, law.invention, Optics, Beamline, chemistry, law, Optoelectronics, High field, business
Abstract

We present the design of a single ultra intense laser beamline delivering 25PW pulses at one shot per minute as a first step of an ultra intense high field science European project (extreme light infrastructure).

Published
2007
Full Text
View/download PDF

48. Wavefront correction and aberrations pre-compensation in the middle of Petawatt-class CPA laser chains

Author

Emeric Lavergne, Thomas A. Planchon, Guillaume Dovillaire, L. Canova, F. Canova, Xavier Levecq, and Jean-Paul Chambaret

Subjects
Wavefront, Physics, Class (computer programming), business.industry, Strehl ratio, Laser, Deformable mirror, Compensation (engineering), law.invention, Optics, law, Spatial frequency, Stimulated emission, business, Adaptive optics
Abstract

We describe preliminary experiences to validate correction of wavefront aberrations in middle of laser chain. This technique allows correction of aberrations from first part, and the pre-compensation of aberrations built in second part of laser.

Published
2007
Full Text
View/download PDF

49. 97% Top hat efficiency, 4 J/cm2 damage threshold compression gratings

Author

S. Tonchev, F. Canova, Jean Paul Chambaret, Manuel Flury, N. Lyndin, Olivier Parriaux, Ph. Delaporte, Eric Freysz, Olivier Uteza, and Marc Tondusson

Subjects
Materials science, business.industry, Physics::Optics, Plasma, Grating, Diffraction efficiency, Compression (physics), Wavelength, Optics, Pulse compression, Spectral width, Optoelectronics, business, Diffraction grating
Abstract

High diffraction efficiency all-dielectric pulse compression grating is reported with a close to 100 % flat top over more than 20 nm spectral width around 800 nm wavelength and more than 4 J/cm2 damage threshold.

Published
2007
Full Text
View/download PDF

50. Pump Beams Homogenization for Terawatt / Petawatt Class Ti:Sapphire Amplifiers

Author

F. Canova, Moana Pittman, F. Pie, F. Reversat, S. Tisserand, and Jean-Paul Chambaret

Subjects
Optical amplifier, Materials science, Optical fiber, business.industry, Amplifier, Ti:sapphire laser, Physics::Optics, Laser, law.invention, Optical pumping, Optics, law, Fiber laser, Sapphire, Optoelectronics, business
Abstract

The goal of this study is to design robust and reliable pumping configurations for multi-Terawatt / Petawatt class power amplifiers. For that we investigate all the necessary processes involved in Ti:Sapphire lasers pumping: the damage threshold and the optimal pump fluency amplifying material (Ti:Sapphire), the beam transport technique (relay image and homogenization) and the coherence properties of pump lasers.

Published
2007
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results