半导体抽运的Er:YAG陶瓷单频脉冲激光器  

Diode-Pumped Single-Frequency Er:YAG Ceramic Pulsed Laser

作　　者：王硕 史阳 李尚桦 宋睿 高明伟[1] 王庆[1] 高春清[1] Wang Shuo;Shi Yang;Li Shanghua;Song Rui;Gao Mingwei;Wang Qing;Gao Chunqing(School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学光电学院,北京100081

出　　处：《光学学报》2018年第9期236-241,共6页Acta Optica Sinica

基　　金：国家重点研发计划(2017YFB0405203)

摘　　要：利用掺铒钇铝石榴石(Er:YAG)单块非平面环形腔(NPRO)激光器作为种子源,通过注入锁定技术研制了半导体抽运的Er:YAG陶瓷单频脉冲激光器。在重复频率为200Hz的条件下,获得了脉冲能量为11.45mJ、脉冲宽度为174ns的1645nm单频脉冲输出,在x和y方向上的M^2因子分别为1.45和1.42,脉冲光与种子光拍频信号的频谱半峰全宽为2.67MHz。实验表明,Er:YAG陶瓷作为增益介质在产生1.6μm激光方面具有较好的性能。此激光器可在激光雷达领域作为多普勒相干测风激光雷达和遥感激光雷达的光源。By using injection-locking technique,we develop a diode-pumped Er：YAG ceramic single frequency pulsed laser seeded by an Er：YAG nonplanar ring oscillator（NPRO）laser.The 1645 nm single frequency laser with output energy of 11.45 mJ,pulse width of 174 ns and pulse repetition rate of 200 Hz,is obtained.The corresponding M^2-factors are 1.45 and 1.42 in x and y directions,respectively.The full width at half-maximum（FWHM）of the frequency spectrum of the heterodyne beating signal between the pulse and the seed is 2.67 MHz.The result indicates that Er：YAG ceramics have good performance in generating 1.6μm lasers.This singlefrequency pulsed laser can be employed as the seed of coherent wind lidars and remote sensing lidars in the field of laser lidar.

关 键 词：激光器 半导体抽运 注入锁定 全固态激光器 

分 类 号：TN248[电子电信—物理电子学]