High-power and high-efficiency 4.3 μm ZGP-OPO  

作　　者：Feifei Wang Jiatong Li Xiaohui Sun Bingzheng Yan Hongkun Nie Xun Li Kejian Yang Baitao Zhang Jingliang He 王菲菲;李佳桐;孙晓晖;颜秉政;聂鸿坤;李珣;杨克建;张百涛;何京良(State Key Laboratory of Crystal Materials,Institute of Novel Semiconductors,Shandong University,Jinan 250100,China;Key Laboratory of Laser&Infrared System,Ministry of Education,Shandong University,Qingdao 266237,China;Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China;State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics of CAS,Xi’an 710119,China)

机构地区：[1]State Key Laboratory of Crystal Materials,Institute of Novel Semiconductors,Shandong University,Jinan 250100,China [2]Key Laboratory of Laser&Infrared System,Ministry of Education,Shandong University,Qingdao 266237,China [3]Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China [4]State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics of CAS,Xi’an 710119,China

出　　处：《Chinese Optics Letters》2022年第1期74-78,共5页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China (No. 2017YFB0405204);National Research Foundation of China (No. 61975095);Youth Cross Innovation Group of Shandong University (No. 2020QNQT);Development Program of Shaanxi Province(No.S2019-YF-ZDCXL-ZDLGY-0253);Major Science and Technology Innovation Project of Shandong Province (No. 2019JZZY020206);Qilu Young Scholar of Shandong University

摘　　要：In this paper,a high-power and high-efficiency 4.3μm mid-infrared(MIR)optical parametric oscillator(OPO)based on ZnGeP_(2)(ZGP)crystal is demonstrated.An acousto-optically Q-switched Ho Y_(3)Al_(5)O_(12) laser operating at 2.1μm with a maximum average output power of 35 W and pulse width of 38 ns at a repetition rate of 15 kHz is established and employed as the pump source.A doubly resonant OPO is designed and realized with the total MIR output power of 13.27 W,including the signal and idler output power of 2.65 W at 4.07μm and 10.62 W at 4.3μm.The corresponding total optical-to-optical and slope efficiencies are 37.9%and 67.1%,respectively.The shortest pulse width,beam quality factor,and output power instability are measured to be 36 ns,M_(x)^(2)=1.8,M_(y)^(2)=2.0,and RMS<1.9%at 8 h,respectively.Our results pave a way for designing high-power and high-efficiency 4–5μm MIR laser sources.

关 键 词：mid-infrared laser optical parametric oscillator NONLINEARITY 

分 类 号：TN753.91[电子电信—电路与系统]