| 反射镜热畸变对高能激光系统输出光束质量的影响 |
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| 引用本文： | 饶鹏,刘文广,华卫红.反射镜热畸变对高能激光系统输出光束质量的影响[J].光学与光电技术,2009,7(3):12-15. |
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| 作者姓名： | 饶鹏 刘文广 华卫红 |
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| 作者单位： | 国防科学技术大学光电科学与工程学院,湖南长沙,410073 |
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| 摘 要： | 高能激光系统中，反射镜镜面热变形会使系统的输出光强和波前分布不均匀性加剧，从而导致输出光束质量的下降。建立了复杂镜面光线追迹的模型，使用Fresnel衍射公式和光线追迹的方法，研究了高能激光系统内通道不同数量22．5。反射镜对输出光束质量的影响。该方法和部分结果对高能激光系统激光器的优化设计，激光内通道冷却方式以及自适应光学校正能力设计参数的选取具有一定的参考价值。
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| 关 键 词： | 激光技术 高能激光 热变形 光束质量 |
Thermal Distortion Influence of Reflector on Output Beam Quality of HEL System |
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| RAO Peng,LIU Wen-guang,HUA Wei-hong.Thermal Distortion Influence of Reflector on Output Beam Quality of HEL System[J].optics&optoelectronic technology,2009,7(3):12-15. |
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| Authors: | RAO Peng LIU Wen-guang HUA Wei-hong |
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| Institution: | ( College of Opto Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China ) |
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| Abstract: | Thermal distortion is severe on the reflectors in inner channel of high energy laser （HEL）system nowadays. The influence of thermal distortion is significant on the laser beam quality. Based on the Kirchhoff diffraction integration equation and model of ray tracing on the distorted mirrors, the influence of 22.5° mirrors in different channels on the beam quality is studied. The research method and some results in this paper are useful for the optimization of HEL system, cooling-down method of inner channel and selecting of AO parameters. |
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| Keywords: | laser technology high energy lasers thermal distortion beam quality |
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