| 高脉冲重复频率调Q Tm,Ho:GdVO4激光器 |
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| 引用本文： | 余文峰,孙峰,程祖海,刘倚红,周次明,张耀宁.高脉冲重复频率调Q Tm,Ho:GdVO4激光器[J].强激光与粒子束,2005,17(1):29-32. |
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| 作者姓名： | 余文峰 孙峰 程祖海 刘倚红 周次明 张耀宁 |
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| 作者单位： | 华中科技大学 激光技术国家重点实验室，湖北 武汉 430074 |
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| 基金项目： | 国家863计划项目资助课题 |
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| 摘 要： | 报道了一个高效率连续波和调Q高重频两种运行方式的Tm,Ho:GdVO4激光器.Tm,Ho:GdVO4晶体尺寸4 mm×4 mm×7 mm,a轴通光,液氮制冷到100 K,由发射中心波长为793 nm的光纤耦合激光二极管端面泵浦.Tm,Ho:GdVO4激光连续波输出功率4.0 W,光光转换效率26%.声光调Q条件下输出平均高功率3.9 W,脉冲重复频率10 kHz,脉冲宽度50 ns. 通过减小声光Q开关的开启时间,激光脉冲宽度由50 ns减小至23 ns.在10 kHz重频下,测量最大脉冲能量0.39 mJ , 峰值功率7.8 kW.
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| 关 键 词： | 激光二极管 端面泵浦 声光调Q Tm Ho:GdVO4 |
| 文章编号： | 1001-4322(2005)01-0029-04 |
| 收稿时间： | 2004/8/22 |
| 修稿时间： | 2004年8月22日 |
Effects on the mirror's thermo-deform and deflection in different supporting way |
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| YU Wen-feng,SUN feng,CHENG Zu-hai,LIU Yi-hong,ZHOU Ci-ming,ZHANG Yao-ning.Effects on the mirror's thermo-deform and deflection in different supporting way[J].High Power Laser and Particle Beams,2005,17(1):29-32. |
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| Authors: | YU Wen-feng SUN feng CHENG Zu-hai LIU Yi-hong ZHOU Ci-ming ZHANG Yao-ning |
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| Institution: | State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | The heat-deformation P-V value of Si mirror(80 mm×12.5 mm) fixed in radial-fixing way analyzed by ANSYS is 0.109 3 μm, with net irradiation heat 100 W in 5 s by a 40 mm and co-axial uniform laser. And 0.138 8 μm by axial-fixing way and 0.121 μm in three points supporting respectively. The experimental result to the Si mirror(75 mm×12.5 mm), fixed in radial-fixing way is 0.32 μm with 100 W heat in 5 s by a 17 mm×20 mm and co-axial uniform laser, and 0.63 μm in axial-fixing way. The experimental mirror deflection is 0.63 μrad by radial-fixing way and 0.28 μrad by axial-fixing way. The deflection is the smallest by three-cone supporting way. |
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| Keywords: | High power laser Heat deformation Heat deflection Supporting way |
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