Hybrid femtosecond laser system based on a Yb:KGW regenerative amplifier for N_P polarization

作     者：Dongyu Yan Bowen Liu Yuxi Chu Huanyu Song Lu Chai Minglie Hu Chingyue Wang 闫东钰;刘博文;储玉喜;宋寰宇;柴路;胡明列;王清月

作者机构：Ultrafast Laser Laboratory Key Laboratory of Opto-electronic Information Science and Technology of Ministry of Education School of Precision Instruments and Opto-electronics Engineering Tianjin University 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2019年第17卷第4期

页      面：71-74页

核心收录：

学科分类：08[工学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Nos.61805174,U1730115,61535009,and 11527808) the Open Fund of the State Key Laboratory of High Field Laser Physics(Shanghai Institute of Optics and Fine Mechanics) 

主　　题：hybrid femtosecond femtosecond Yb-doped 60 kHz repetition 

摘      要：We report a hybrid femtosecond laser system based on a femtosecond Yb-doped fiber laser and a Yb-doped potassium gadolinium tungstate(Yb:KGW) regenerative amplifier. To match the central wavelength of the seed source, a Yb:KGW crystal is used in the regenerative amplifier for N_p polarization. We study and optimize the dynamics of nonlinear amplification to alleviate the gain narrowing effect. With optimization, the system can output 270 fs pulses with 21 μJ pulse energy at a 60 kHz repetition rate.