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An All‐Optical, Actively Q‐Switched Fiber Laser by an Antimonene‐Based Optical Modulator
Author(s) -
Wang Yunzheng,
Huang Weichun,
Wang Cong,
Guo Jia,
Zhang Feng,
Song Yufeng,
Ge Yanqi,
Wu Leiming,
Liu Jie,
Li Jianqing,
Zhang Han
Publication year - 2019
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201800313
Subject(s) - materials science , laser , saturable absorption , optoelectronics , modulation (music) , optical modulator , fiber laser , q switching , optics , phase modulation , physics , phase noise , wavelength , acoustics
Q‐switched fiber lasers are of great interest in industrial material processing, nonlinear frequency conversion, spectroscopy etc. However, passive Q‐switching possesses drawbacks of degradation and failure of the saturable absorber and the difficulty in accurate modification of the repetition rate. To overcome these issues, active Q‐switching that can normally modulate the cavity quality‐factor by an externally‐driven Q‐switcher is in high demand. Herein, an actively Q‐switched laser with antimonene‐based all‐optical modulator is devised based on the high photo‐thermal efficiency (48%) and broadband response in antimonene. It is demonstrated that this actively modulated laser represents all‐optically tunable output parameters (e.g., output repetition rate), environmental stability, and easy synchronization. It is anticipated that this actively antimonene‐based all‐optical modulator with advantages of large modulation depth, low energy consumption, and high conversion efficiency has great potential in all‐optical information processing and pulsed laser engineering.