Linear polarization output performance of Nd:YAG laser at 946 nm considering the energy-transfer upconversion

作     者：冯晋霞 李渊骥 张宽收 

作者机构：State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics Shanxi University Collaborative Innovation Centre of Extreme Optics Shanxi University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2018年第27卷第7期

页      面：366-370页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：Project supported by the National Key R&D Program of China(Grant No.2016YFA0301401) the Fund for Shanxi "331 Project" Key Subjects Construction,China(Grant No.1331KS) 

主　　题：946 nm laser linear polarization thermally induced depolarization losses energy-transfer upcon-version 

摘      要：A theoretical model of quasi-three-level laser system is developed, in which both the thermally induced depolarization loss and the effect of energy-transfer upconversion are taken into account. Based on the theoretical investigation of the influences of output transmission and incident pump power on thermally induced depolarization loss, the output performance of 946 nm linearly polarized Nd：YAG laser is experimentally studied. By optimizing the transmission of output coupler, a 946 nm linearly polarized continuous-wave single-transverse-mode laser with an output power of 4.2 W and an optical-optical conversion efficiency of 16.8% is obtained, and the measured beam quality factors are M2 = 1.13 and My2 = 1.21. The theoretical prediction is in good agreement with the experimental result.