激光二极管侧面抽运免温控激光器的研究  

Study on free-temperature-controlled lasers side-pumped by laser diodes

作　　者：高恒[1] 贾凯[1] 杨闯[1] 刘亚萍[1] 赵刚[1] 高军 GAO Heng;JIA Kai;YANG Chuang;LIU Yaping;ZHAO Gang;GAO Jun(Southwest Institute of Technical Physics, Chengdu 610041, China)

机构地区：[1]西南技术物理研究所,成都610041

出　　处：《激光技术》2019年第1期1-5,共5页Laser Technology

摘　　要：为了解决激光二极管抽运波长随温度漂移导致激光器输出能量下降的问题,采用激光二极管抽运源波长匹配及凹凸稳定谐振腔技术实现免温控,并进行了理论分析和实验验证。该激光器腔长210mm,电光转换效率5.7%;输出单脉冲能量大于60mJ,在10℃～30℃范围内,能量稳定度优于5%;激光器输出光斑直径4mm、脉冲宽度8ns、激光器10Hz工作时,激光远场束散角为1.1mrad。结果表明,实验与理论分析计算结果符合,该激光二极管侧面抽运免温控激光器可在一定温度范围内保持稳定的能量输出。该理论分析与方案对研究免温控激光器具有重要意义。In order to solve the problem that the laser output energy decreases when laser diode pump wavelength drifts with temperature,the technology of laser diode pump source wavelength matching and concave-convex stable resonator are used to realize temperature-free control.After theoretical analysis and experimental verification,the results show that,when the length of laser cavity is210mm,electro-optic conversion efficiency is5.7%.Output single pulse energy is more than60mJ,and the energy stability is better than5%in the range of10℃~30℃.Laser output spot diameter is4mm,pulse width is8s,and laser far-field beam divergence angle is1.1mrad at10Hz.The experimental results are in agreement with the theoretical analysis.The laser diode side-pumped temperature-free laser can maintain a stable energy output in a certain temperature range.The theoretical analysis and the scheme are of great significance for the study on temperature-free-controlled lasers.

关 键 词：激光器 脉冲激光器 电光调Q 免温控 二极管抽运激光器 能量稳定度 

分 类 号：TN248.1[电子电信—物理电子学] TN249