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Browsing by Author "Cheng, Hao-Ping"

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    Exploring the power scaling of the cryogenic 946 nm monolithic laser
    (2018-08-01)
    Cho, Chun-Yu
    ;
    Huang, Tzu-Lin
    ;
    Cheng, Hao-Ping
    ;
    Huang, Kai-Feng
    ;
    Chen, Yung-Fu
    The criterion for achieving power scaling of the cryogenically cooled monolithic 946 nm laser is investigated by varying crystal length. Theoretical analysis of the mode-to-pump size matching indicates that the optimal power can be obtained with a crystal length of 8 mm. Furthermore, the pump-wavelength dependence of the output power can be less sensitive when a longer crystal was employed. We demonstrate 946 nm monolithic lasers with various crystal lengths to verify the theoretical analysis. The highest output power (30.2 W) is obtained by using an 8 mm Nd:YAG crystal at 130 K. Moreover, the output power reduction ratio is found to be smaller than 15% with the pump wavelength fluctuating between +/- 1 nm.