Efficiency optimization of the square pulse pumped terawatt level Optical Parametric Chirped Pulse Amplifier

被引：0
|
作者：
Stepanenko, Yuriy [1 ]
Wnuk, Pawel [1 ]
Nejbauer, Michal [1 ]
Radzewicz, Czeslaw [1 ]
机构：
[1] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland
来源：
TECHNOLOGIES FOR OPTICAL COUNTERMEASURES VIII | 2011年 / 8187卷
关键词：
Ultrafast lasers; Parametric oscillators and amplifiers; Pulse compression; HIGH-CONVERSION-EFFICIENCY; ND-YAG LASERS; LIGHT-PULSES; 2ND-HARMONIC GENERATION; AMPLIFICATION SYSTEM; SINGLE-CRYSTALS; MULTI-TERAWATT; GAIN BANDWIDTH; NANOSECOND; TRIBORATE;
D O I：
10.1117/12.903732
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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.
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页数：12
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