摘要
报道了一种基于工程应用的3. 705μm紧凑型高稳定性光参量振荡器。采用半导体制冷、强制气体对流冷却和热管导热技术相结合的方式,对主振荡功率放大结构的掺Yb光纤泵浦模块泵浦过程中产生的废热进行有效管理,再将经过耦合后的泵浦光注入到使用温控炉精确控温的PPMgLN晶体,在重复频率为55. 56 k Hz时,获得了功率不稳定度优于1. 5%的1. 78 W,脉冲宽度120 ns,峰值波长3. 705μm的线偏中红外激光输出,光光转换效率为12. 6%。
A 3.705μpm compact,highly stable optical parametric oscillator(OPO)based on engineering application was reported.The method of combining semiconductor cooling technique,forced convection cooling technique and heat pipe technique was adopted to effectively manage the waste heat generated from pumping process of the main oscillator power amplifier(MOPA)structure of the Yb-doped fiber pumped module.Then the coupled pump light was injected into the PPMgLNcrystal,which was precisely temperature controlled by a constant temperature oven.When repetition rate was at 55.56 kHz,average output power of 1.78 W at 3.705μpm line-polarized mid-infrared laser was obtained with 120 ns pulse width,the power instability was better than 1.5%and light-light conversion efficiency was 12.6%.
作者
赵志刚
刘虎
王德飞
何洋
楚振锋
ZHAO Zhi-gang;LIU Hu;WANG De-fei;HE Yang;CHU Zhen-feng(Luoyang Electronic Equipment Test Center China,Luoyang 471003,China;State Key Laboratory of Laser Interaction with Matter,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Jilin 130033,China)
出处
《激光与红外》
CAS
CSCD
北大核心
2019年第1期51-54,共4页
Laser & Infrared
关键词
中红外激光
光参量振荡器
不稳定度
发散角
mid-infrared laser
optical parametric oscillator
instability
divergence angle
