首页> 外文会议>Conference on Adaptive Optics and Applications II, Oct 15-16, 2002, Shanghai, China >Studying of thermal blooming of HEL in the non-flowing beam tube
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Studying of thermal blooming of HEL in the non-flowing beam tube

机译:非流动束管中HEL的热起霜研究

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摘要

Thermal blooming is one of the most important factors, which make the beam diffused and cause the decline of laser intensity on the object. This paper presents a method to reduce thermal blooming of high-energy laser (HEL) in the beam tube and compares two models describing the thermal blooming. Helium has the qualities of low absorption coefficient, high thermal conductivity and low index of refraction, and can be used as the medium through which HEL beam propagates. The condensations of thermal conduction model and acoustic wave model are evaluated respectively. Results show the method is practicable, and two models' applicable ranges are got.
机译:热起霜是最重要的因素之一,它会使光束散射并导致物体上的激光强度下降。本文提出了一种减少束管中高能激光(HEL)的热起霜的方法,并比较了两种描述热起霜的模型。氦具有低吸收系数,高导热率和低折射率的性质,可以用作HEL光束传播的介质。分别评估了热传导模型和声波模型的凝聚。结果表明该方法是可行的,得到了​​两种模型的适用范围。

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