| 激光大气传输湍流与热晕综合效应 |
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| 引用本文： | 饶瑞中.激光大气传输湍流与热晕综合效应[J].红外与激光工程,2006,35(2):130-134. |
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| 作者姓名： | 饶瑞中 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所,安徽,合肥,230031 |
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| 摘 要： | 讨论了激光大气传输时的湍流与热晕综合效应问题.提出了根据湍流效应对热晕经验公式进行修正的处理方法,其物理基础是在湍流效应较明显的情况下,由相干距离决定的湍流Fresnel衍射参数远小于由发射口径决定的Fresnel衍射参数时,小尺度热晕的影响超过整束热晕占主导地位.将修正的经验公式与基于数值计算的定标公式相比较,结果令人满意.
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| 关 键 词： | 大气湍流 热晕 激光大气传输 |
| 文章编号： | 1007-2276(2006)02-0130-05 |
| 收稿时间： | 2005-08-20 |
| 修稿时间： | 2005-10-14 |
Combined effect of turbulence and thermal blooming of laser propagation in atmosphere |
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| RAO Rui-zhong.Combined effect of turbulence and thermal blooming of laser propagation in atmosphere[J].Infrared and Laser Engineering,2006,35(2):130-134. |
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| Authors: | RAO Rui-zhong |
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| Affiliation: | Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,Anhui 230031, China |
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| Abstract: | The combined effects of turbulence and thermal blooming of laser propagation in atmosphere is discussed.A technique was proposed that where in the empirical formula of thermal blooming was employed with a modification by turbulence effect. The physical foundation is that the turbulence Fresnel parameter is smaller than the whole-beam Fresnel parameter,the small-scale thermal blooming is dominant. The modified empirical formula is compared with a scaling law based on numerical simulation, and the results are satisfactory. |
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| Keywords: | Turbulence Thermal blooming Laser propagation in atmosphere |
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