Semiconductor saturable absorber mirror in the 3-5 μm mid-infrared region

被引：39

作者：

Qin, Zhipeng ^{[1
]}

Chai, Xuliang ^{[2
,3
]}

Xie, Guoqiang ^{[1
]}

Xu, Zhicheng ^{[2
]}

Zhou, Yi ^{[2
]}

Wu, Qi ^{[4
]}

Li, Jie ^{[4
]}

Wang, Zhuan ^{[5
]}

Weng, Yuxiang ^{[5
]}

Hai, Ting ^{[1
]}

Yuan, Peng ^{[1
]}

Ma, Jingui ^{[1
]}

Chen, Jianxin ^{[2
]}

Qian, Liejia ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Phys & Astron, Collaborat Innovat Ctr IFSA CICIFSA, Key Lab Laser Plasmas,Minist Educ, Shanghai 200240, Peoples R China

[2] Univ Chinese Acad Sci, Hangzhou Inst Adv Study, 1 Sub Lane Xiangshan, Hangzhou 310024, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Infrared Imaging Mat & Devices, Shanghai 200083, Peoples R China

[4] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[5] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Lab Soft Matter Phys, Beijing 100190, Peoples R China

来源：

OPTICS LETTERS | 2022年 / 47卷 / 04期

基金：

中国国家自然科学基金;

关键词：

FIBER LASER; FEMTOSECOND;

D O I：

10.1364/OL.444485

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Semiconductor saturable absorber mirrors (SESAMs) have been regarded as a revolutionary technology for ultrafast mode-locked lasers, producing numerous landmark laser breakthroughs. However, the operating wavelength of existing SESAMs is limited to less than 3 mu m. In this study, we create a 3-5 mu m mid-infrared (MIR) SESAM by engineering an InAs/GaSb type-II superlattice. Bandgap engineering and the strong coupling between potential wells in a superlattice enable a broadband response of saturable absorption in the 3-5 mu m spectral range. Using the fabricated SESAM, we realize a SESAM mode-locked Er:ZBLAN fiber laser at 3.5 mu m, which delivers MIR ultrashort pulses with high long-term stability. The breakthrough of SESAM fabrication in the MIR will promote the development of MIR ultrafast coherent sources and related application fields. (C) 2022 Optica Publishing Group

引用

页码：890 / 893

页数：4

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