光学
纳秒
材料科学
放大器
激光器
脉冲持续时间
二极管
脉搏(音乐)
Q开关
光电子学
物理
探测器
CMOS芯片
作者
Chaoyang Li,Chengqiang Lu,Chuan Li,Ning Yang,Ye Li,Zhen Yang,Song Han,Junfeng Shi,Zewu Zhou
标识
DOI:10.1016/j.optcom.2017.02.005
摘要
We report on a high-energy high-repetition-rate nanosecond Nd:YAG main oscillator power amplifier (MOPA) system. Maximum output pulse energy of 2.36 J with duration of 9.4 ns at 50 Hz has been achieved. The master oscillator was a LD side-pumped electro-optical Q-switched Nd:YAG rod laser adopting unstable cavity with variable reflectivity mirror (VRM). It delivered a pulse train with energy up to 180 mJ and pulse duration of 10.7 ns. The near-field pattern demonstrated a nearly super Gaussian flat top profile. In the amplification stage, the pulse was boosted via double-pass two Nd:YAG rod amplifiers. Maximum pulse energy was obtained at the peak pump power of 37.5 kW, corresponding to an optical-optical conversion efficiency of 25.2%. The correlative peak power was deduced to be 251 MW. We also presented the result of 100 Hz nanosecond laser with average output power of >100 W.
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