【作者】 田国周；

【导师】 吕百达；

【作者基本信息】 四川大学 ， 光学， 2006， 硕士

【摘要】 自从1960年Maiman发明第一台红宝石激光器以来，世界各国都在努力发展激光技术，现在各种各样的激光器已经在各个领域发挥着重要的作用。高能激光在军事上的巨大应用前景，促使各国采取各种先进技术途径努力提高固体激光器的输出能量。在光抽运过程中激光介质吸收泵浦辐射而产生的热，加上冷却过程造成的热流结合起来构成了激光介质的各种热效应。随着泵浦功率增加，热效应随之加剧，使激光器的阈值升高、效率降低、并导致折射率分布不均，产生光学畸变，劣化光学质量。因此高功率激光器热效应问题的研究，是一个十分重要而有意义的研究课题。现有的热管理技术已经基本能够满足很多需要，但是要使激光器向更高的平均功率发展，就需要采取更有效的热管理技术。本文以激光武器的发展应用为背景，分析了固体激光器中的热效应以及热管理技术，主要工作包括： 1．分析了我国发展高能固体激光武器的可行性方案。高能激光武器的巨大潜力早已被人们所认识到，各国都在努力发展自己的高平均功率激光器。美国凭借其雄厚的科研和资金优势，走技术攻关的道路，除了已有的化学激光器，又发展了热容固体激光器，形成了多元化的格局，可以根据不同的情况，选择最合适的方案；而俄罗斯却在单发脉冲达到2000J的基础上，对灯泵钕玻璃激光器进行改造，采用新型热管理技术和集成技术，使其达更多还原

【Abstract】 Since the first laser was invented by Maiman in 1960, many developed countries in the world have made great effort to develop the laser technology, and now many kinds of lasers have played an important role in various fields. Especially, since the achievements of high-power, high-brightness solid-state lasers, the military usage of solid-state lasers has attracted a large amount of interest, as solid-state lasers are easy to achieve high mobility, low weight, many developed countries are doing their best to improve the output energy of the solid-state lasers by adopting various advanced technologies. Since a solid-state laser medium absorbs pumping radiation and deposits heat energy when pumping, and a heat flow dues to surface cooling, thermal effect comes into being. If the pumping power increases, thermal effect will exacerbate, which will increase the threshold of the laser, reduce efficiency , result in the nonuniformity of the refractive index and optic distortion and lower optical quality of the laser. Therefore, the research activities on the thermal effects of high energy solid-state lasers are great importance and significance. Based on the development and application of solid-state laser weapons, thermal effects of high energy solid-state lasers and thermal management technologies are analyzed in the paper. The main results are summarized as follows:1. A feasible way and prepositional way to develop high energy laser更多还原