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Browsing by Author "Hsu, Hsin-Han"

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    High peak power output of a diode-pumped Q-switched and mode locked Nd : LuVO4 with Cr : YAG saturable absorber
    (2007)
    Lin, Ja-Hon
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    Wei, Ming-Dar
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    Hsu, Hsin-Han
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    Hsieh, Wen-Feng
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    光電工程學系
    The Q-switched mode-locked (QML) pulses is demonstrated in a Nd:LuVO4 laser to generate peak power exceeding 400 kW. By the Cr:YAG with initial transmittance T-0=40%, the Q-switching envelope about 30 ns and 6.9 kHz repetition rate is produced and the pulsewidth of CW-ML pulses is about 56 ps.
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    Stable Q-switched mode-locked Nd3+:LuVO4 laser by Cr4+:YAG crystal
    (2008-10-13)
    Lin, Ja-Hon
    ;
    Chen, Hou-Ren
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    Hsu, Hsin-Han
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    Wei, Ming-Dar
    ;
    Lin, Kuei-Huei
    In use of saturable Cr4+:YAG crystals, we have demonstrated the stable Q-switched and mode-locked (QML) operation of the Nd:LuVO4 laser. The operation range of QML in use of the Cr4+:YAG is larger than that use of SESAM and NLM. The obtained shape of Q-switched envelope, repetition rate and pulse energy are demonstrated to depend on the initial transmittance of the Cr4+:YAG and reflectivity of the output coupler. Using R = 60% and T-0 = 40%, the highest pulse energy of 77 mu J of each Q-switched envelope, and the highest peak power about 200 kW of Q-switched mode-locked pulses can be obtained at 15 W pump power. It demonstrate the superior characteristic of the Nd:LuVO4 crystal. (C) 2008 Optical Society of America