The 266-nm ultraviolet-beam generation of all-fiberized super-large-mode-area narrow-linewidth nanosecond amplifier with tunable pulse width and repetition rate

doi:10.1088/1674-1056/ac192b

中国物理B ›› 2022, Vol. 31 ›› Issue (3): 34207-034207.doi: 10.1088/1674-1056/ac192b

The 266-nm ultraviolet-beam generation of all-fiberized super-large-mode-area narrow-linewidth nanosecond amplifier with tunable pulse width and repetition rate

Shun Li(李舜), Ping-Xue Li(李平雪)^†, Min Yang(杨敏), Ke-Xin Yu(于可新), Yun-Chen Zhu(朱云晨), Xue-Yan Dong(董雪岩), and Chuan-Fei Yao(姚传飞)

Institute of Ultrashort Pulsed Laser and Application, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China

收稿日期:2021-06-12 修回日期:2021-07-20 接受日期:2021-07-30 出版日期:2022-02-22 发布日期:2022-02-24
通讯作者: Ping-Xue Li E-mail:pxli@bjut.edu.cn
基金资助:
Project supported by the Key Program of Beijing Municipal Natural Science Foundation, China (Grant No. KZ201910005006), the National Nature Science Foundation of China (Grant No. 62005004), the Natural Science Foundation of Beijing Municipality, China (Grant No. 4204091), and the National Science Foundation for Postdoctor Scientists of China (Grant No. 212423).

The 266-nm ultraviolet-beam generation of all-fiberized super-large-mode-area narrow-linewidth nanosecond amplifier with tunable pulse width and repetition rate

Shun Li(李舜), Ping-Xue Li(李平雪)^†, Min Yang(杨敏), Ke-Xin Yu(于可新), Yun-Chen Zhu(朱云晨), Xue-Yan Dong(董雪岩), and Chuan-Fei Yao(姚传飞)

Institute of Ultrashort Pulsed Laser and Application, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China

Received:2021-06-12 Revised:2021-07-20 Accepted:2021-07-30 Online:2022-02-22 Published:2022-02-24
Contact: Ping-Xue Li E-mail:pxli@bjut.edu.cn
Supported by:
Project supported by the Key Program of Beijing Municipal Natural Science Foundation, China (Grant No. KZ201910005006), the National Nature Science Foundation of China (Grant No. 62005004), the Natural Science Foundation of Beijing Municipality, China (Grant No. 4204091), and the National Science Foundation for Postdoctor Scientists of China (Grant No. 212423).

摘要/Abstract

摘要： We report on a compact, stable, all-fiberized narrow-linewidth (0.045 nm) pulsed laser source emitting laser beam with a wavelength of 266 nm, and tunable pulse width and repetition rate. The system is based on all-fiberized nanosecond amplifier architecture, which consists of Yb-doped fiber preamplifiers and a super-large-mode-area Yb-doped fiber power amplifier. The fiber amplifier with a core of 50 μ is used to raise the threshold of the stimulated Brillouin scattering (SBS) effect and to obtain high output power and single pulse energy. Using lithium triborate (LBO) crystal and beta-barium borate (BBO) crystal for realizing the second-harmonic generation (SHG) and fourth-harmonic generation (FHG), we achieve 17 μJ (1.73 W) and 0.66 μJ (66 mW), respectively, at wavelengths of 532 nm and 266 nm and a repetition rate of 100 kHz with pulse width of 4 ns. This source has great potential applications in fluorescence research and solar-blind ultraviolet optical communication.

关键词: nanosecond, all-fiber amplifier, narrow-linewidth, ultraviolet beam generation, tunable pulse width and repetition rate

Abstract: We report on a compact, stable, all-fiberized narrow-linewidth (0.045 nm) pulsed laser source emitting laser beam with a wavelength of 266 nm, and tunable pulse width and repetition rate. The system is based on all-fiberized nanosecond amplifier architecture, which consists of Yb-doped fiber preamplifiers and a super-large-mode-area Yb-doped fiber power amplifier. The fiber amplifier with a core of 50 μ is used to raise the threshold of the stimulated Brillouin scattering (SBS) effect and to obtain high output power and single pulse energy. Using lithium triborate (LBO) crystal and beta-barium borate (BBO) crystal for realizing the second-harmonic generation (SHG) and fourth-harmonic generation (FHG), we achieve 17 μJ (1.73 W) and 0.66 μJ (66 mW), respectively, at wavelengths of 532 nm and 266 nm and a repetition rate of 100 kHz with pulse width of 4 ns. This source has great potential applications in fluorescence research and solar-blind ultraviolet optical communication.

Key words: nanosecond, all-fiber amplifier, narrow-linewidth, ultraviolet beam generation, tunable pulse width and repetition rate

中图分类号: (Lasers)

42.55.-f

42.55.Wd (Fiber lasers) 42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)

Shun Li(李舜), Ping-Xue Li(李平雪), Min Yang(杨敏), Ke-Xin Yu(于可新), Yun-Chen Zhu(朱云晨), Xue-Yan Dong(董雪岩), and Chuan-Fei Yao(姚传飞). The 266-nm ultraviolet-beam generation of all-fiberized super-large-mode-area narrow-linewidth nanosecond amplifier with tunable pulse width and repetition rate[J]. 中国物理B, 2022, 31(3): 34207-034207.

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The 266-nm ultraviolet-beam generation of all-fiberized super-large-mode-area narrow-linewidth nanosecond amplifier with tunable pulse width and repetition rate

The 266-nm ultraviolet-beam generation of all-fiberized super-large-mode-area narrow-linewidth nanosecond amplifier with tunable pulse width and repetition rate

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