| 临近空间激光传输特性研究 |
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| 引用本文： | 陈海龙,刘斌,高保军,薛娴,郭胜鹏. 临近空间激光传输特性研究[J]. 激光与红外, 2017, 47(5): 548-552 |
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| 作者姓名： | 陈海龙 刘斌 高保军 薛娴 郭胜鹏 |
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| 作者单位： | 火箭军装备研究院,北京100094 |
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| 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。
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| 关 键 词： | 临近空间；吸收散射；大气湍流；热晕 |
Research on characteristics of laser transmission in near space |
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| CHEN Hai-long,LIU Bin,GAO Bao-jun,XUE Xian,GUO Sheng-peng. Research on characteristics of laser transmission in near space[J]. Laser & Infrared, 2017, 47(5): 548-552 |
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| Authors: | CHEN Hai-long LIU Bin GAO Bao-jun XUE Xian GUO Sheng-peng |
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| Affiliation: | Equipment Academy of The Rocket Force,Beijing 100094,China |
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| Abstract: | Based on the basic characteristics of atmosphere in near space,the interaction between laser and atmosphere was analyzed and studied. The absorption and scattering of atmosphere in near space was analyzed by the MODTRAN software,and the transmittance curve of laser wavelength within 400~2000 nm was given. From laser spot drifting and beam radius expanding,the influence of atmosphere turbulence on laser transmission was calculated,and the threshold power of thermal blooming was estimated. The conclusion show that the influence of atmosphere on laser transmission in near space is weaker than that in terrestrial space,which is helpful to realize the long range transmission of high power laser. |
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