High-pulse-energy passively Q-switched sub-nanosecond MOPA laser system operating at kHz level | Zendy

Yiping Zhou | Zendy; Xudong Li | Zendy; Haobo Xu | Zendy; Renpeng Yan | Zendy; Yugang Jiang | Zendy; Rongwei Fan | Zendy; Deying Chen | Zendy

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High-pulse-energy passively Q-switched sub-nanosecond MOPA laser system operating at kHz level

Author(s) -

Yiping Zhou,

Xudong Li,

Haobo Xu,

Renpeng Yan,

Yugang Jiang,

Rongwei Fan,

Deying Chen

Publication year - 2021

Publication title -

optics express

Language(s) - Danish

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.425586

Subject(s) - materials science , optics , q switching , laser , nanosecond , amplifier , pulse repetition frequency , pulse (music) , birefringence , solid state laser , pulse width modulation , pulse duration , optoelectronics , power (physics) , physics , telecommunications , radar , cmos , quantum mechanics , detector , computer science

A passively Q-switched sub-nanosecond master oscillator power amplifier (MOPA) laser system at 1064 nm has been reported in this paper. The master oscillator was a passively Q-switched YAG/Nd:YAG/Cr 4+ :YAG microchip laser, yielding a pulse energy of 0.14 mJ and a pulse width of ∼490 ps at repetition rates of 500 Hz and 1 kHz. After passing a double-pass side-pumped Nd:YAG amplification system, the pulse energy reached 7.6 mJ and 1.7 mJ at 500 Hz and 1 kHz, respectively. The spatial beam deformation caused by the thermally induced birefringence was investigated numerically and experimentally.

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