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https://doi.org/10.3788/irla201847.0105003
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Cite Journal: Infrared and Laser Engineering |  Publication Date: Jan 1, 2018 |
采用非稳腔光参量振荡（OPO）研制了千赫兹重复频率人眼安全波段全固态激光器。激光器采用电光调Q方式、脉冲激光二极管（LD）侧面泵浦Nd：YAG激光晶体实现了高光束质量的1.064m基频激光。光参量振荡部分采用Ⅱ类非临界相位匹配KTP晶体，为了获得较好的光束质量，OPO谐振腔采用平凸非稳定谐振腔结构，实现了千赫兹重频、窄脉冲1.57m波段激光输出。在脉冲激光二极管泵浦电流为125 A、电光调Q重复频率为1 kHz时，1.57m激光输出最大平均功率达到了4.67 W，激光脉冲宽度为4.3 ns，功率不稳定度为3%，激光泵浦阈值约为45 A。
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