临近空间激光传输特性研究

发布时间：2018-06-11 11:05

本文选题：临近空间 + 吸收散射　；参考：《激光与红外》2017年05期

【摘要】：基于临近空间大气基本特性,对激光与大气相互作用进行分析和研究,采用MODTRAN软件分析了临近空间大气的吸收和散射,给出了400~2000 nm波长激光的透过率曲线,从激光光斑漂移和扩展两个方面对大气湍流对激光传输的影响进行数值计算,对发生热晕效应的功率阈值进行数值估算,结论表明:与近地空间相比,临近空间大气对于激光传输影响较弱,有利于实现高功率激光的长距离传输。
[Abstract]:Based on the basic characteristics of the near space atmosphere, the interaction between the laser and the atmosphere is analyzed. The absorption and scattering of the near space atmosphere are analyzed by using MODTRAN software, and the transmittance curve of the laser at 400 ~ 2 000 nm wavelength is given. The influence of atmospheric turbulence on laser propagation is numerically calculated from two aspects of laser spot drift and expansion. The power threshold of thermal halo effect is calculated numerically. The results show that compared with near-Earth space, The near space atmosphere has a weak effect on laser transmission, which is beneficial to the long distance transmission of high power laser.
【作者单位】：火箭军装备研究院;
【分类号】：TN241

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