0.43 J/100 ps Nd:YAG laser with adaptive compensation of thermally induced lens

被引：12
作者：
Kornev, A. F. [1 ,2 ]
Balmashnov, R., V [1 ]
Kuchma, I. G. [2 ]
Davtian, A. S. [2 ]
Oborotov, D. O. [2 ]
机构：
[1] ITMO Univ, St Petersburg, Russia
[2] Lasers & Opt Syst Co Ltd, St Petersburg, Russia
来源：
OPTICS LETTERS | 2018年 / 43卷 / 18期
关键词：
REPETITION-RATE; ROD AMPLIFIER; SYSTEM; PULSES; POWER; OSCILLATOR; ENERGY; BEAM;
D O I：
10.1364/OL.43.004394
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate a diode-pumpedmaster oscillator power amplifier Nd:YAG 1064 nm laser with sub-joule-level output energy of 0.43 J, high pulse repetition rate of 200 Hz, and short pulse duration of 100 ps. The 5 mJ master oscillator consisted of a 100 nJ/100 ps Nd:YVO4 microchip laser and end-pumped Nd: YAG regenerative amplifier. The two-pass output amplifier was based on two circle divide 10 x 140 mm Nd:YAG laser rods. We apply an adaptive compensator with an analyzer based on an astigmatic optical system and a quadrant photodiode to compensate for low-order wave-front non-stationary thermal distortions in a high-energy laser amplifier. The adaptive compensator demonstrates high sensitivity to curvature changes of lambda/100, and it provides output beam divergence near 1.5 x DL in 100 ps 0.43 J x 200 Hz of operation mode. (C) 2018 Optical Society of America
引用
收藏
页码：4394 / 4397
页数：4
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