Lead Sulfide Saturable Absorber Based Passively Mode-Locked Tm-Doped Fiber Laser

Fei Liu; Ying Zhang; Xiaodong Wu; Jianfeng Li; Fei Yan; Xiaohui Li; Abdul Qyyum; Zhu Hu; Chen Zhu; Yong Liu

doi:10.1109/JPHOT.2020.2964981

IEEE Photonics Journal (Jan 2020)

Lead Sulfide Saturable Absorber Based Passively Mode-Locked Tm-Doped Fiber Laser

Fei Liu,
Ying Zhang,
Xiaodong Wu,
Jianfeng Li,
Fei Yan,
Xiaohui Li,
Abdul Qyyum,
Zhu Hu,
Chen Zhu,
Yong Liu

Affiliations

Fei Liu: School of Optoelectronic Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, The University of Electronic Science and Technology of China (UESTC), Chengdu, China
Ying Zhang: School of Physics and Information Technology, Shaanxi Normal University, Xi'an, China
Xiaodong Wu: School of Optoelectronic Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, The University of Electronic Science and Technology of China (UESTC), Chengdu, China
Jianfeng Li: ORCiD; School of Optoelectronic Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, The University of Electronic Science and Technology of China (UESTC), Chengdu, China
Fei Yan: School of Optoelectronic Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, The University of Electronic Science and Technology of China (UESTC), Chengdu, China
Xiaohui Li: ORCiD; School of Physics and Information Technology, Shaanxi Normal University, Xi'an, China
Abdul Qyyum: School of Physics and Information Technology, Shaanxi Normal University, Xi'an, China
Zhu Hu: School of Optoelectronic Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, The University of Electronic Science and Technology of China (UESTC), Chengdu, China
Chen Zhu: Science and Technology on Solid-State Laser Laboratory, Beijing, China
Yong Liu: School of Optoelectronic Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, The University of Electronic Science and Technology of China (UESTC), Chengdu, China

DOI: https://doi.org/10.1109/JPHOT.2020.2964981
Journal volume & issue: Vol. 12, no. 2
pp. 1 – 10

Abstract

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In this paper, a passively mode-locked Tm-doped fiber laser by employing lead sulfide (PbS) nanoparticles as the saturable absorber (SA) is successfully demonstrated in the 2 μm region for the first time, to the best of our knowledge. Measured by a home-made balanced twin-detector setup at 2 μm, the PbS SA was characterized by the modulation depth of 10.69%, the non-saturable loss of 74.27%, and the saturable peak intensity of 8.62 MW/cm2, respectively. The laser delivered stable conventional soliton with a pulse duration of 1.24 ps and a repetition rate of 21.93 MHz. The center wavelength and 3 dB bandwidth are 1957.37 nm and 3.43 nm, respectively. Additionally, the second-order harmonic soliton pulses with a repetition rate of 43.86 MHz were also observed by further increasing the pump power. Our work reveals that PbS material is a reliable SA applied for pulse generation in the 2 μm spectral region.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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