1.06μm泵浦PPLT高重复频率人眼安全激光器  

High repetition rate PPLT eye-safe laser with 1.06 μm pumping

作　　者：付洁[1] 沈兆国[1] 唐刚锋[1] 毛鑫[1] 程建新[1] 羊毅[1] 

机构地区：[1]中航工业洛阳电光设备研究所,河南洛阳471009

出　　处：《应用光学》2013年第1期156-160,共5页Journal of Applied Optics

摘　　要：利用1.06μm光泵浦周期极化钽酸锂(PPLT)晶体获得1.54μm激光。采用内腔式光参量振荡结构,利用V型腔优化谐振腔参数,分析了OPO晶体内光斑大小随激光工作物质热焦距的变化以及V型腔夹角对光束质量的影响。当泵浦电功率约为100 W时,获得高重复频率10kHz、脉冲宽度125ns、平均功率1.9W的1.54μm激光,电光转换效率约为1.9%。A 1.54 μm laser was obtained using periodically poled lithium tantalate （PPLT） crystal pumped by l. 06 μm laser. Intracavity optical parametric oscillator（OPO） was adopted and parameters of resonant cavity were optimized by using V-type cavity. The change of the beam spot along with the thermal focus length of gain medium and the impact of the angle of V-type cavity on beam quality were analyzed. As the input electric power was about 100 W, the 1.54 tzm laser with the repetition rate of 10 kHz, pulsewidth of 125 ns and average power of 1.9 W was acquired, and the electro-optical efficiency of 1.9% was achieved.

关 键 词：高重复频率 人眼安全 PPLT晶体 V型内腔 

分 类 号：TN242[电子电信—物理电子学]