Parametric instabilities study in a shock ignition relevant regime

C. A. Cecchetti; A. Giulietti; P. Koester; L. Labate; T. Levato; L. A. Gizzi; L. Antonelli; A. Patria; D. Batani; M. Kozlová; D. Margarone; J. Nejdl; B. Rus; M. Sawicka; M. Lafon; X. Ribeyre; G. Schurtz

doi:10.1117/12.891249

9 June 2011 Parametric instabilities study in a shock ignition relevant regime

C. A. Cecchetti, A. Giulietti, P. Koester, L. Labate, T. Levato, L. A. Gizzi, L. Antonelli, A. Patria, D. Batani, M. Kozlová, D. Margarone, J. Nejdl, B. Rus, M. Sawicka, M. Lafon, X. Ribeyre, G. Schurtz

Author Affiliations +

Proceedings Volume 8080, Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy; 80802A (2011) https://doi.org/10.1117/12.891249
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

Abstract

Inertial Confinement Fusion with Shock Ignition relies on a very strong shock created by a laser pulse at an intensity of the order of 1016W/cm2. In this context, an experimental campaign at the Prague Asterix Laser System (PALS) has been carried out within the frame of the HiPER project. Two beams have been used, the first to create an extended preformed plasma (scale length of the order of hundreds of micrometers) on a planar target, the second to generate a strong shock wave. Different diagnostics were used to study both the shock breakout at the rear surface of the target and the laserplasma coupling and parametric instabilities. This paper is focused on back-scattering analysis to measure the backreflected energy and to characterize parametric instabilities such as stimulated Brillouin and Raman scattering. Our experimental data show that parametric instabilities do not play a strong role in the laser plasma coupling. Moreover, preliminary analysis of the back reflected light from the interaction region shows that less than 5% of the total incident laser energy was back-reflected, with only a small fraction of that light was originating from parametric instabilities.

Citation Download Citation

C. A. Cecchetti, A. Giulietti, P. Koester, L. Labate, T. Levato, L. A. Gizzi, L. Antonelli, A. Patria, D. Batani, M. Kozlová, D. Margarone, J. Nejdl, B. Rus, M. Sawicka, M. Lafon, X. Ribeyre, and G. Schurtz "Parametric instabilities study in a shock ignition relevant regime", Proc. SPIE 8080, Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy, 80802A (9 June 2011); https://doi.org/10.1117/12.891249

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available