| Comparison of laser performance of electro-optic Q-switched Nd:YAG ceramic/single crystal laser |
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| 作者姓名： | 纪江华 朱小磊 王春雨 冯永伟 楼祺洪 |
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| 作者单位： | Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800，Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences，Shanghai 201800，Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences，Shanghai 201800，Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences，Shanghai 201800，Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences，Shanghai 201800 |
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| 摘 要： | An electro-optic Q-switched Nd:YAG ceramic laser operating at kHz repetition rate was demonstrated. Thermal induced lens' focus of ceramic rod was measured and compensated by plano-convex cavity structure. Depolarization loss at different output powers was measured in Nd:YAG single crystal and ceramic lasers. High-energy high-beam-quality laser pulse output was obtained in both laser structures. Pulse energy of about 20 mJ and pulse width of less than 12 ns were achieved, and the average power reached 20 W. The divergence of output laser beam was less than 1.2 mrad, and the beam propagation factor M2 was about 1.4.
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