Efficient diode-pumped passively Q-switched laser with Nd:YAG/Cr:YAG composite crystal |
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| Authors: | Jieguang Miao Baoshan Wang Jiying Peng Huiming Tan Huikun Bian |
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| Affiliation: | aChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun Jilin 130033, China;bGraduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Diffusion bonded Nd:YAG/Cr:YAG composite laser crystal has been employed to perform a compact diode-pumped passively Q-switched laser. At the incident pump power of 3.3 W and pulse repetition rate of 16.3 kHz, the maximum average output of 592 mW has been obtained, corresponding to an optical-to-optical conversion efficiency of 18%. Stable passively Q-switched operation with peak power of 6.5 kW and pulse duration of 6 ns was also achieved. It has been experimentally revealed that Nd:host/Cr:YAG composite structure is a promising material for compact cost-effective Q-switched laser sources with high-peak power and short pulse duration. In addition, thermal lens effect (TLE) in the active medium and its impact on the Q-switched laser performance have been analyzed. |
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| Keywords: | Diode-pumped lasers Q-switching Diffusion bonding |
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