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  • Received: Jul. 3, 2020

    Accepted: Sep. 11, 2020

    Posted: Dec. 14, 2020

    Published Online: Jan. 4, 2021

    The Author Email: Xu Liu (01055108@163.com)

    DOI: 10.3788/COL202119.021403

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    Xu Liu, Chaoyong Tan, Yong Cheng, Jingsong Wei, Mengzhen Zhu, Xia Chen, Chaowei Mi. 7 kHz sub-nanosecond microchip laser amplified by a grazing incidence double pass slab amplifier[J]. Chinese Optics Letters, 2021, 19(2): 021403

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Chinese Optics Letters, Vol. 19, Issue 2, 021403 (2021)

7 kHz sub-nanosecond microchip laser amplified by a grazing incidence double pass slab amplifier

Xu Liu*, Chaoyong Tan, Yong Cheng, Jingsong Wei, Mengzhen Zhu, Xia Chen, and Chaowei Mi

Author Affiliations

  • Ordnance NCO Academy, Army Engineering University, Wuhan 430075, China

Abstract

To obtain short pulse width and high peak power laser, a 7 kHz sub-nanosecond microchip laser amplified by a grazing incidence double pass slab amplifier is experimentally demonstrated in this Letter. We use a compact side-pumped Nd:YVO4 bounce amplifier with grazing incidence beam for achieving high gains and power extraction. Laser output power of 7.37 W at 7 kHz, 1.2 MW pulse peak power with 877 ps duration and 1.05 mJ energy, 25 pm spectral width, and near diffraction limited mode beam quality are achieved, and the optical-to-optical efficiency is 18%. The laser is packaged in a volume of 356 mm × 226 mm × 84 mm and may be used for applications such as laser altimeters and ladar systems.

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