Open AccessTailoring the spectrum and spatial mode of Yb-doped random fiber laser
Author(s) -
Jialiang Lv,
Hongxun Li,
Yimin Zhang,
Linxiao Deng,
Xuexiao Ma,
Chun Gu,
Peijun Yao,
Lixin Xu,
Qiwen Zhan
Publication year - 2022
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.453859
Subject(s) - optics , laser , fiber laser , speckle pattern , materials science , wavelength , multiplexing , coherence (philosophical gambling strategy) , single mode optical fiber , mode (computer interface) , optoelectronics , physics , computer science , telecommunications , quantum mechanics , operating system
In this paper, we make a comprehensive study on tailoring the spectrum and transverse mode of random fiber lasers (RFLs). By simply temperature tuning, the mode gain profile of RFL can be flexibly and precisely manipulated. The spectrum of laser output can be easily tailored in single-wavelength, dual-wavelength, and three-wavelength, respectively. Meanwhile, the operating transverse mode is also optional among LP 01 mode, LP 11 mode, and hybrid mode. The slope efficiency of 17.9% and 27.3% are obtained for LP 11 mode and LP 01 mode operation, respectively. Besides, the coherence control can be confirmed by making speckle contrast measurements. This high-efficiency RFL with the customizable spectrum and spatial mode would have unique applications in wavelength or mode division multiplexing systems, speckle-free imaging, secure communication, and information encryption.
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