High-power all-fiber linearly polarized Yb-doped chirped pulse amplifier based on active polarization control  

作　　者：王涛 任帅 常洪祥 任博 郭琨 李灿 马鹏飞 冷进勇 周朴 Tao Wang;Shuai Ren;Hongxiang Chang;Bo Ren;Kun Guo;Can Li;Pengfei Ma;Jinyong Leng;and Pu Zhou(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China;School of Information and Communications,National University of Defense Technology,Wuhan 430035,China;Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,China;Hunan Provincial Key Laboratory of High Energy Laser Technology,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China [2]School of Information and Communications,National University of Defense Technology,Wuhan 430035,China [3]Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,China [4]Hunan Provincial Key Laboratory of High Energy Laser Technology,National University of Defense Technology,Changsha 410073,China

出　　处：《Chinese Optics Letters》2024年第4期66-70,共5页中国光学快报（英文版）

基　　金：supported by the Director Fund of State Key Laboratory of Pulsed Power Laser Technology(No.SKL2020ZR02);the Postgraduate Scientific Research Innovation Project of Hunan Province(No.QL20220007)。

摘　　要：High-power ultrafast laser amplification based on a non-polarization maintaining fiber chirped pulse amplifier is demonstrated.The active polarization control technology based on the root-mean-square propagation(RMS-prop)algorithm is employed to guarantee a linearly polarized output from the system.A maximum output power of 402.3 W at a repetition rate of 80 MHz is realized with a polarization extinction ratio(PER)of>11.4 dB.In addition,the reliable operation of the system is verified by examining the stability and noise properties of the amplified laser.The M2factor of the laser beam at the highest output power is measured to be less than 1.15,indicating a diffraction-limited beam quality.Finally,the amplified laser pulse is temporally compressed to 755 fs with a highest average power of 273.8 W.This is the first time,to the best of our knowledge,that the active polarization control technology was introduced into the high-power ultrafast fiber amplifier.

关 键 词：active polarization control root-mean-square propagation algorithm linearly polarized laser chirped pulse amplification femtosecond laser fiber laser 

分 类 号：TN248[电子电信—物理电子学] TN722