种子注入环形腔人眼安全KTP参变振荡器的研究  

Investigation on Eye-Safe Ring-Cavity KTP Optical Parametric Oscillator with Seed Injection

作　　者：龙启强[1] 钟凯[2] 洪光烈[1] 

机构地区：[1]中国科学院上海技术物理研究所空间主动光电系统技术实验室,上海200083 [2]天津大学精密仪器与光电子工程学院激光与光电子研究所,天津300072

出　　处：《光学学报》2012年第6期120-125,共6页Acta Optica Sinica

摘　　要：利用电光调Q的Nd:YAG激光器抽运非临界相位匹配(θ=90°,φ=0°)环形腔KTP光学参变振荡器(OPO),实现了高能量人眼安全波段的1.57μm激光输出。理论与实验结果表明,减小谐振腔长度和注入种子源激光可以有效降低阈值,提高输出能量。当Nd:YAG激光器抽运能量为88mJ时,注入种子源功率由0mW增加到6mW,输出能量由8.8mJ增加到14mJ。当抽运能量为167.7mJ,注入种子源功率达到6mW时,最大输出能量达到46mJ,峰值功率7.44MW。An eye-safe laser source at 1.57 μm is demonstrated by using a non-critically phase-matched（θ=90°,φ=0°） ring cavity optical parametric oscillator pumped by an electro-optic Q-switched Nd：YAG laser.Theoretical and experimental results show that reducing the cavity length and injection of seed laser can effectively reduce the threshold,and increase the output energy.When the Nd：YAG laser energy is 88 mJ and the injected signal power changes from 0 to 6 mW,the output energy is enhanced from 8.8 to 14 mJ.When the pump energy is 167.7 mJ and the injected signal power is 6 mW,the maximum output energy of 46 mJ is obtained,corresponding to the peak power of 7.44 MW.

关 键 词：激光器 人眼安全激光 光参变振荡器 磷酸氧钛钾 环形腔 种子注入 

分 类 号：TN248.1[电子电信—物理电子学]