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Investigation of continuous-wave and Q-switched microchip laser characteristics of Yb:YAG ceramics and crystals |
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| Authors: | Jun Dong Guozhang XuJian Ma Mengjun CaoYing Cheng Ken-ichi UedaHideki Yagi Alexander A. Kaminskii |
| Affiliation: | a Department of Electronics Engineering, Xiamen University, Xiamen 361005, China b Institute for Laser Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan c Konoshima Chemical Co., Ltd., 80 Kouda, Takuma, Mitoyo-gun, Kagawa 769-1103, Japan d Institute of Crystallography, Russian Academy of Sciences, Moscow 119333, Russia |
| Abstract: | Continuous-wave and passively Q-switched microchip laser performance of Yb:YAG ceramics and single-crystals was investigated. Highly efficient continuous-wave Yb:YAG laser performance was observed at 1030 nm and 1049 nm for both Yb:YAG ceramics and crystals with different transmissions of output couplers. The laser performance of Yb:YAG ceramic is comparable to that of Yb:YAG single crystal. Meanwhile, the laser performance of laser-diode pumped Yb:YAG/Cr4+:YAG all-ceramics- and all-crystals-combination passively Q-switched microchip lasers were investigated. Sub-nanosecond laser pulses with peak power over 150 kW were obtained with different Yb:YAG/Cr4+:YAG combinations. Linearly polarized laser was observed in Yb:YAG/Cr4+:YAG all-crystals combination and circular polarized laser was obtained in Yb:YAG/Cr4+:YAG all-ceramics combination. The best laser performance was obtained with Yb:YAG/Cr4+:YAG all-crystals combination. |
| Keywords: | Yb:YAG Ceramics Single-crystal Passively Q-switched Polarization states |
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