All-fiber passive Q-switched laser based on stimulated Brillouin scattering

被引：0

作者：

Zhao, Guanrui ^{[1
]}

Ge, Tingwu ^{[1
]}

Li, Qingxuan ^{[1
]}

Zhang, Wenqi ^{[2
]}

Li, Yanjie ^{[1
]}

Xue, Chuang ^{[1
]}

Li, Guanzheng ^{[1
]}

机构：

[1] School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing

[2] School of Noncommissioned Officers, Army Academy of Armored Forces, Changchun

来源：

Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2024年 / 32卷 / 23期

关键词：

all-fiber; fiber laser; near-infrared supercontinuum; passive Q-switching; Rayleigh scattering; stimulated Brillouin scattering;

D O I：

10.37188/OPE.20243223.3409

中图分类号：

学科分类号：

摘要：

This paper presents an all-fiber，passively Q-switched pulsed laser system with enhanced laser damage threshold and high-power output. A 1060-XP single-mode fiber serves as the scattering medium，utilizing Rayleigh scattering（RS）and stimulated Brillouin scattering（SBS）effects. A fiber Bragg grating with a central wavelength of 1 064 nm and 10% reflectivity forms the resonant cavity mirror. The system produces a bidirectional，tunable laser output with stable Q-switching characteristics under varying pump power. The transition of the laser output through Amplified Spontaneous Emission（ASE），random lasing，and Q-switched pulsed operation is analyzed. At a pump power of 48. 15 W，the system achieves a near-infrared supercontinuum output with a 7-ns pulse width，single-end output power of 11. 79 W，wavelength coverage of 1 030-1 650 nm，23. 2% slope efficiency，and a peak power of up to 17 kW. The repetition rate is tunable from 3. 7 to 100 kHz. This compact，robust laser design eliminates fragile components，offering a fully integrated，miniaturized solution for pulsed fiber lasers. © 2024 Chinese Academy of Sciences. All rights reserved.

引用

页码：3409 / 3415

页数：6

共 18 条

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