Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7128562 | Optics & Laser Technology | 2018 | 5 Pages |
Abstract
We demonstrated a high brightness narrow-linewidth microsecond (μs) pulse green laser from second harmonic generation (SHG) of a master oscillator power amplifier (MOPA) laser system. The oscillator was a quasi-continuous wave pulsed diode-side-pumped 1064â¯nm Nd:YAG laser with an average output power of 45.2â¯W and a beam quality factor of M2â¯=â¯1.21, operating at a pulse repetition frequency of 500â¯Hz with a â¼160â¯Î¼s of pulse duration. After a two-stage amplifier, the fundamental output power of MOPA system was increased up to 198â¯W. Using a type-I lithium triborate nonlinear crystal, the maximum SHG output power of 78.4â¯W at 532â¯nm was obtained with a linewidth of 0.54â¯pm and a beam quality factor M2 less than 1.61. The brightness of the green light was as high as 1.08â¯Ãâ¯1010â¯W/cm2â¯sr. This is, to the best of our knowledge, the highest brightness solid state light source for the narrow-linewidth μs pulse green lasers at 532â¯nm.
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Authors
Qing-shuang Zong, Yong Bo, Chuan Guo, Qi Bian, Jin-quan Chang, Wen-jun Li, Li-jiao He, Peng-cheng Di, Jun-wei Zuo, Yu Shen, Da-fu Cui, Qin-jun Peng, Zu-yan Xu,