Effect of thermally induced birefringence on high power picosecond azimuthal polarization Nd:YAG laser system

作     者：Hongpan Peng Ce Yang Shang Lu Ning Ma Meng Chen 彭红攀;杨策;卢尚;马宁;陈檬

作者机构：Laser Engineering Research InstituteBeijing University of Technology 

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

年 卷 期：2019年第28卷第2期

页      面：234-240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 Natural Science Foundation of China(Grant No.U1631240) the Education Commission Program of Beijing Beijing Natural Science Foundation(Grant No.KZ201510005001) 

主　　题：azimuthal polarization thermally induced birefringence Nd:YAG amplifiers picosecond laser 

摘      要：Pulse-burst 1064-nm picosecond azimuthal polarization beam amplification up to an average power of 16.32 W using side-pumped Nd: YAG amplifiers has been demonstrated. The maximum envelop energy as much as 16.32 mJ, corresponding to a power amplification factor of 299.5%. A simple criterion was defined to help estimate the amount of depolarization in Nd:YAG amplifier stages. The degree of depolarization of the beam was 7.1% and the beam quality was measured to be M2= 3.69. The reason for the azimuthal polarization depolarization and beam quality degradation were explained theoretically and experimentally during the amplification process.