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Your search keyword '"Laboratory of Lasers and Applications"' showing total 2 results
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2 results on '"Laboratory of Lasers and Applications"'

1. Accessing Extreme Spatiotemporal Localization of High-Power Laser Radiation through Transformation Optics and Scalar Wave Equations

Author

Stylianos Tzortzakis, V. Yu. Fedorov, Margaux Chanal, David Grojo, Laboratoire de physique et modélisation des milieux condensés (LPM2C), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire Lasers, Plasmas et Procédés photoniques (LP3), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Laboratory of Lasers and Applications, National Technical University of Athens [Athens] (NTUA), and Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Field (physics), General Physics and Astronomy, Physics::Optics, Warm dense matter, Wave equation, Laser, 01 natural sciences, law.invention, Power (physics), 010309 optics, Nonlinear system, Classical mechanics, law, 0103 physical sciences, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, 010306 general physics, Scalar field, Transformation optics
Abstract

International audience; Although tightly focused intense ultrashort laser pulses are used in many applications from nano-processing to warm dense matter physics, their nonparaxial propagation implies the use of numerical simulations with vectorial wave equations or exact Maxwell solvers that have serious limitations and thus have hindered progress in this important field up to now. Here we present an elegant and robust solution that allows one to map the problem on one that can be addressed by simple scalar wave equations. The solution is based on a transformation optics approach and its validity is demonstrated in both the linear and the nonlinear regime. Our solution allows accessing challenging problems of extreme spatiotemporal localization of high power laser radiation that remain almost unexplored theoretically until now.

Published
2016
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2. Analysis of the X-ray and time-resolved XUV emission of laser produced Xe and Kr plasmas

Author

N. Kontogiannopoulos, F. Thais, Jean-Raphael Marques, L. Lecherbourg, Stylianos Tzortzakis, I. Matsushima, Claude Chenais-Popovics, S. Bastiani-Ceccotti, Olivier Peyrusse, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), 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), Laboratory of Lasers and Applications, National Technical University of Athens [Athens] (NTUA), 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), Matière à Haute Densité d'Energie (MHDE), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDyl), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Intelligent Systems Institute [Tsukuba] (IS AIST), and National Institute of Advanced Industrial Science and Technology (AIST)

Subjects
Nuclear and High Energy Physics, Electron density, Radiation, Materials science, [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], Thomson scattering, Plasma, Nanosecond, Laser, 01 natural sciences, 7. Clean energy, 010305 fluids & plasmas, law.invention, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Extreme ultraviolet, Ionization, 0103 physical sciences, Emission spectrum, Atomic physics, 010306 general physics, ComputingMilieux_MISCELLANEOUS
Abstract

A frequency-doubled laser beam of the Nd:glass kilojoule nanosecond LULI2000 facility (1.5 ns duration, 200–400 J energy, 0.53 μm wavelength) was focused on a Xe or Kr gas jet. The plasma was simultaneously diagnosed with X-ray (in the wavelength range of 6–8 A for Kr and of 12–15 A for Xe) and time-resolved XUV (20–200 A) emission spectroscopy. Electron density and temperature as well as the ionization charge were measured by time-resolved Thomson scattering of the heating laser pulse. The spectra are compared with the calculations performed with the NLTE collisional-radiative code AVERROES/TRANSPEC. Best fits of the X-ray and XUV spectra obtained are presented. The measured charge distribution and dynamics is analyzed using the simultaneous Thomson scattering diagnostic.

Published
2007
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