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Proceedings Paper

Efficiency optimization of the square pulse pumped terawatt level optical parametric chirped pulse amplifier
Author(s): Yuriy Stepanenko; Pawel Wnuk; Michal Nejbauer; Czeslaw Radzewicz
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Paper Abstract

Numerical simulations and analysis of a very efficient and stable non-collinear Optical Parametric Chirped Pulse Amplification (OPCPA) femtosecond system are presented. The system is optimized for a long (nanosecond), rectangular temporal profile and a flat-top spatial profile of the pump laser pulse. We show that a two stage system consisting of a multipass preamplifier and a time-sheared power amplifier operating around 850 nm and pumped by a 532 nm pulse can amplify pulses directly from a femtosecond oscillator up to multi-terawat levels with quantum efficiencies as high as 0.9. We also discuss practical schemes of the few-cycle multi-terawatt OPCPA systems employing different nonlinear crystals. The results of the Monte-Carlo simulations are used to balance the stability and efficiency of the parametric amplifier system.

Paper Details

Date Published: 5 October 2011
PDF: 12 pages
Proc. SPIE 8187, Technologies for Optical Countermeasures VIII, 818708 (5 October 2011); doi: 10.1117/12.903732
Show Author Affiliations
Yuriy Stepanenko, Institute of Physical Chemistry (Poland)
Pawel Wnuk, Institute of Physical Chemistry (Poland)
Michal Nejbauer, Institute of Physical Chemistry (Poland)
Czeslaw Radzewicz, Institute of Physical Chemistry (Poland)
Warsaw Univ. (Poland)

Published in SPIE Proceedings Vol. 8187:
Technologies for Optical Countermeasures VIII
David H. Titterton; Mark A. Richardson, Editor(s)

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