Grating-free 2.8 μm Er:ZBLAN fiber chirped pulse amplifier

被引：9
作者：
Zhou, Yicheng [1 ]
Qin, Zhipeng [1 ,2 ]
Zhou, Xiabing [1 ]
Xie, Guoqiang [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Phys & Astron, Collaborat Innovat Centerof IFSA CICIFSA, Key Lab Laser Plasmas,Minist Educ, Shanghai, Peoples R China
[2] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA CICIFSA, Sch Phys & Astron, Key Lab Laser Plasmas,Minist Educ, Shanghai 200240, Peoples R China
来源：
HIGH POWER LASER SCIENCE AND ENGINEERING | 2022年 / 10卷
基金：
中国国家自然科学基金;
关键词：
Er; ZBLAN fiber; fiber chirped pulse amplifier; grating free; mid-infrared; LASER; GENERATION;
D O I：
10.1017/hpl.2022.36
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on a grating-free fiber chirped pulse amplifier (CPA) at 2.8 mu m for the first time. The CPA system adopted Er:ZBLAN fiber with large anomalous dispersion as the stretcher and germanium (Ge) rods as the compressor with a compact structure. High-energy picosecond pulses of 2.07 mu J were generated at the repetition rate of 100 kHz. Using highly dispersive Ge rods, the amplified pulses were compressed to 408 fs with a pulse energy of 0.57 mu J, resulting in a peak power of approximately 1.4 MW. A spectral broadening phenomenon in the main amplifier was observed, which was caused by the special gain shape of the Er:ZBLAN fiber amplifier in operation and confirmed by our numerical simulation. This compact fiber CPA system at 2.8 mu m will be practical and meaningful for application fields.
引用
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页数：6
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