基于光参量振荡器的重频人眼安全激光器技术研究  

Eye-safe repetition laser based on optical parametric oscillator

作　　者：李刚[1] 宁子立[1] 杨爱粉[1] 韩耀锋[1] 

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《应用光学》2011年第3期579-581,590,共4页Journal of Applied Optics

摘　　要：对KTP-OPO的相位匹配进行了理论分析和计算,并绘制了角度调谐曲线。基于光参量振荡器,选用KTP非线性晶体,在1.57μm人眼安全激光波段进行了实验研究。将脉冲氙灯侧面泵浦Nd∶YAG 1.064μm激光应用于腔内KTP-OPO设计中,在工作频率5 Hz时,输出激光能量32 mJ,脉冲宽度7.22 ns,光-光转换效率为41%。这一结果使重频远距离人眼安全激光测距成为可能。The phase-matching mode of KTP-OPO was theoretically analyzed and calculated,and the angle-tuning curve of KTP-OPO was given.A 1.57 μm eye-safe laser based on optical parametric oscillator was experimentally studied,which adopted KTP nonlinear optical crystal.Using a xenon-flash-lamp-pumped 1.064 μm Nd∶YAG laser in intracavity KTP-OPO,under the repetition rate of 5 Hz,a laser output with the energy of 32 mJ and the pulse width of 7.22 ns was obtained.The optical-to-optical conversion efficiency was 41%,which makes long range laser range finding possible.

关 键 词：非线性光学 光参量振荡器(OPO) 人眼安全激光 相位匹配 KTP晶体 

分 类 号：TN248.1[电子电信—物理电子学]