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  • Received: Jul. 7, 2020

    Accepted: Aug. 12, 2020

    Posted: Dec. 10, 2020

    Published Online: Nov. 23, 2020

    The Author Email: Tongyu Dai (daitonhyu2006@126.com)

    DOI: 10.1017/hpl.2020.34

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    Yunpeng Wang, Youlun Ju, Tongyu Dai, Dong Yan, Baoquan Yao. Single-frequency and free-running operation of a single-pass pulsed Ho:YLF amplifier[J]. High Power Laser Science and Engineering, 2020, 8(4): 04000e39

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High Power Laser Science and Engineering, Vol. 8, Issue 4, 04000e39 (2020)

Single-frequency and free-running operation of a single-pass pulsed Ho:YLF amplifier

Yunpeng Wang, Youlun Ju, Tongyu Dai*, Dong Yan, and Baoquan Yao

Author Affiliations

  • National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin150001, China

Abstract

A single-frequency pulsed holmium-doped yttrium lithium fluoride (Ho:YLF) amplifier pumped by a Tm-doped fiber laser was demonstrated. The seed was an injection-seeded Q-switched Ho:YLF laser. The output energy from the single-frequency pulsed amplifier was 24.2 mJ, with a pulse width of 250 ns at a pulse repetition frequency (PRF) of 100 Hz. The energy stability during 30 min was improved to 1% after the single-frequency pulsed Ho:YLF laser was amplified. The line width of the single-frequency pulsed spectrum of the Ho:YLF amplifier was 2.81 MHz. The single-frequency pulsed Ho:YLF amplifier can be applied to differential absorption lidar (DIAL), since its output spectrum is around the P12 CO2 absorption line.

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