High-power mid-infrared femtosecond master oscillator power amplifier Er:ZBLAN fiber laser system

被引：19
作者：
Yu, Linpeng [1 ]
Liang, Jinhui [1 ]
Zeng, Qinghui [1 ]
Wang, Jiacheng [1 ]
Luo, Xing [1 ]
Wang, Jinzhang [1 ]
Yan, Peiguang [1 ]
Dong, Fanlong [1 ]
Liu, Xing [2 ]
Lue, Qitao [3 ]
Guo, Chunyu [1 ,4 ]
Ruan, Shuangchen [1 ,2 ]
机构：
[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen Key Lab Laser Engn, Guangdong Prov Key Lab Micro Nano Optomechatron En, Shenzhen, Peoples R China
[2] Shenzhen Technol Univ, Key Lab Adv Opt Precis Mfg Technol Guangdong Highe, Shenzhen, Peoples R China
[3] Hans Laser Technol Ind Grp Co Ltd, Shenzhen, Peoples R China
[4] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China
来源：
HIGH POWER LASER SCIENCE AND ENGINEERING | 2023年 / 11卷
基金：
北京市自然科学基金; 中国国家自然科学基金;
关键词：
femtosecond fiber laser; fluoride fiber amplifier; master oscillator power amplifier; mid-infrared; MU-M; LEVEL; GENERATION; PULSES; FS;
D O I：
10.1017/hpl.2023.42
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
High-power femtosecond mid-infrared (MIR) lasers are of vast importance to both fundamental research and applications. We report a high-power femtosecond master oscillator power amplifier laser system consisting of a single-mode Er:ZBLAN fiber mode-locked oscillator and pre-amplifier followed by a large-mode-area Er:ZBLAN fiber main amplifier. The main amplifier is actively cooled and bidirectionally pumped at 976 nm, generating a slope efficiency of 26.9%. Pulses of 8.12 W, 148 fs at 2.8 & mu;m with a repetition rate of 69.65 MHz are achieved. To the best of our knowledge, this is the highest average power ever achieved from a femtosecond MIR laser source. Such a compact ultrafast laser system is promising for a wide range of applications, such as medical surgery and material processing.
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页数：6
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