Chinese Optics Letters, 2019, 17 (7): 071404, Published Online: Jul. 9, 2019   

Strain compensated robust semiconductor saturable absorber mirror for fiber lasers Download: 746次

Author Affiliations
1 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
2 National Research Center for Optoelectronic Engineering, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100871, China
3 Ultrafast Laser Laboratory, Key Laboratory of Opto-electronic Information Technical Science of Ministry of Education, School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
4 Huakuai Photonic Technologies Inc., Zhongshan 528400, China
Abstract
We demonstrate a strain compensated long lifetime semiconductor saturable absorber mirror (SESAM) with a high modulation depth for fiber lasers. The SESAM was measured to have a damage threshold of 9.5 mJ/cm2, a modulation depth of 11.5%, a saturation fluence of 39.3 μJ/cm2, and an inversed saturable absorption coefficient of 630 mJ/cm2. The SESAM has been applied to a linear cavity mode-locked Yb-doped fiber laser, which has been working for more than a year without damage of the SESAM.

Yan Wang, Nan Lin, Wanli Gao, Huanyu Song, Minglie Hu, Haiming Li, Wenxia Bao, Xiaoyu Ma, Zhigang Zhang. Strain compensated robust semiconductor saturable absorber mirror for fiber lasers[J]. Chinese Optics Letters, 2019, 17(7): 071404.

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