Non-pulse-leakage 100-kHz level, high beam quality industrial grade Nd: YVO4 picosecond amplifier

Zhenao Bai, Zhenxu Bai, Zhijun Kang, Fuqiang Lian, Weiran Lin, Zhongwei Fan*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)
    43 Downloads (Pure)

    Abstract

    A non-pulse-leakage optical fiber pumped 100-kHz level high beam quality Nd:YVO4 picosecond amplifier has been developed. An 80 MHz, 11.5 ps mode-locked picosecond laser is used as the seed with single pulse energy of 1 nJ. By harnessing the double β-BaB2O4 (BBO) crystal Pockels cells in both the pulse picker and regenerative amplifier, the seed pulse leakage of the output is suppressed effectively with an adjustable repetition rate from 200 to 500 kHz. Through one stage traveling-wave amplifier, a maximum output power of 24.5 W is generated corresponding to the injected regenerative amplified power of 9.73 W at 500 kHz. The output pulse duration is 16.9 ps, and the beam quality factor M2 is measured to be 1.25 with near-field roundness higher than 99% at the full output power.

    Original languageEnglish
    Article number615
    Pages (from-to)1-8
    Number of pages8
    JournalApplied Sciences (Switzerland)
    Volume7
    Issue number6
    DOIs
    Publication statusPublished - Jun 2017

    Bibliographical note

    Copyright the Author(s) 2017. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

    Keywords

    • regenerative amplifier
    • double-crystal Pockels cell
    • 100-kHz
    • non-pulse-leakage

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