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Proceedings Paper

Spectral shaping of a 5 Hz, multi-joule OPCPA frontend for a 10  PW laser system
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Paper Abstract

We report on the status of the re-commissioning of a high energy OPCPA laser system with programmable spectrum that serves as a frontend for a 10 PW laser at ELI-Beamlines. The OPCPA chain was developed by a consortium of National Energetics and Ekspla along with scientists of ELI-Beamlines.1 The laser system, consisting of three picosecond OPCPA stages, pulse cleaner, Offner stretcher, and 5 nanosecond OPCPA stages pumped by Nd:YAG lasers with programmable pulse shape (NL944, Ekspla), allows for precise spectral shaping while achieving high nonlinear conversion efficiency. Employing a subsequent Nd:glass power amplifiers (PA), the system was demonstrated to yield>1 kJ of energy, while maintaining broad spectrum of > 13 nm (FWHM). After recommissioning the OPCPA frontend in Dolní Břežany, an output energy of 4.3 J, flat beam-profile and good far-field quality has been demonstrated. The spectral shape has been optimized to support > 15 nm bandwidth and >1.5 kJ, consistent with 10 PW operation of the fully integrated laser system after compression.

Paper Details

Date Published: 26 April 2019
PDF: 7 pages
Proc. SPIE 11034, Short-pulse High-energy Lasers and Ultrafast Optical Technologies, 110340C (26 April 2019); doi: 10.1117/12.2524951
Show Author Affiliations
František Batysta, ELI Beamlines (Czech Republic)
Czech Technical Univ. in Prague (Czech Republic)
Roman Antipenkov, ELI Beamlines (Czech Republic)
Jan Bartoníček, ELI Beamlines (Czech Republic)
Štěpán Vyhlídka, ELI Beamlines (Czech Republic)
Pavel Trojek, ELI Beamlines (Czech Republic)
Teddy J. Borger, National Energetics (United States)
Jonas Kolenda, EKSPLA (Lithuania)
April Kissinger, National Energetics (United States)
Jonathan T. Green, ELI Beamlines (Czech Republic)
Robertas Kananavicius, EKSPLA (Lithuania)
Gilles Chériaux, National Energetics (United States)
Jeffrey A. Jarboe, ELI Beamlines (Czech Republic)
Sandra Bruce, National Energetics (United States)
Jan Hubáček, ELI Beamlines (Czech Republic)
Gavin Friedman, ELI Beamlines (Czech Republic)
National Energetics (United States)
Eric Beutlich, National Energetics (United States)
Chris Malato, National Energetics (United States)
Jack A. Naylon, ELI Beamlines (Czech Republic)
Dave Hidinger, National Energetics (United States)
Erhard Gaul, National Energetics (United States)
Daniel Kramer, ELI Beamlines (Czech Republic)
Michael Donovan, National Energetics (United States)
Todd Ditmire, National Energetics (United States)
Bedřich Rus, ELI Beamlines (Czech Republic)

Published in SPIE Proceedings Vol. 11034:
Short-pulse High-energy Lasers and Ultrafast Optical Technologies
Pavel Bakule; Constantin L. Haefner, Editor(s)

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