高稳定性半导体激光侧面抽运Nd:YAG 300 Hz再生放大器  

High Stability Laser Diode Side-Pumped Nd:YAG 300Hz Regenerative Amplifier

作　　者：张若凡[1,2] 韦辉[1] 王江峰[1] 范薇[1] 李学春[1] 

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光物理联合实验室,上海201800 [2]中国科学院大学,北京100049

出　　处：《中国激光》2013年第10期70-76,共7页Chinese Journal of Lasers

摘　　要：提出了一种测量激光晶体热焦距的装置和方法,并以此设计和实现了一台采用平平腔结构激光二极管阵列侧面抽运Nd:YAG再生放大器。通过注入脉冲宽度为2ns、中心波长为1064nm、重复频率为300Hz的300pJ小信号种子光,实现了脉冲宽度为2ns,单脉冲能量1.5mJ的基横模激光输出。总放大倍数为5×106,输出能量稳定性为1.08%[方均根值(RMS)],方波扭曲度为1.10。A new method is proposed to measure the thermal focal length of laser crystal. Based on the experimental results, a laser diode （LD） side-pumped, flat-flat cavity regenerative amplifier is developed. By injecting a small signal seed light with wavelength of 1064 nm, pulse width of 2 ns, repetition rate of 300 Hz and pulse energy of 300 pJ, the output TEM00 laser with maximum pulse energy of 1. 5 mJ, pulse width of 2 ns is obtained. The corresponding amplification ratio is 5 X 106 , and the output energy stability is 1.08% [root-mean-square （RMS）] with the square-pulse distortion of 1.10.

关 键 词：激光器 Nd YAG晶体 激光二极管抽运 再生放大器 热透镜焦距 

分 类 号：TN248[电子电信—物理电子学]