| 湍流大气中反射光束的扩展 |
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| 引用本文： | 冯岳忠,宋正芳.湍流大气中反射光束的扩展[J].光学学报,1987(9). |
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| 作者姓名： | 冯岳忠 宋正芳 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所
(冯岳忠),中国科学院安徽光学精密机械研究所(宋正芳) |
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| 摘 要： | 本文基于推广的惠更斯-菲涅耳原理,利用“平方近似”假设,导得湍流大气中被反射激光束扩展的表达式,并对反射光束的扩展特性作了讨论。证实了平面镜反射光束的扩展存在放大效应,角反射器反射光束的扩展存在自补偿效应。理论公式还表明,利用长波长激光及使用较大的发射、反射孔径,可以减小反射光束的扩展。
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| 关 键 词： | 湍流大气 反射光束的扩展 |
Beam spread induced by atmospheric turbulence in a folded path |
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| FENG YUEZHONG SOMG ZHENGFANG.Beam spread induced by atmospheric turbulence in a folded path[J].Acta Optica Sinica,1987(9). |
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| Authors: | FENG YUEZHONG SOMG ZHENGFANG |
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| Abstract: | On the basis of extended Huygens-Fresnel principle and quadratic approximation, general expressions of the beam spread reflected from a target in a turbulent atmosphere are devivod. Tho properties of reflected beam spread are investigated. It is found that there exist "amplification" and "self-compensation" of beam spread in the reflection from a mirror and a corner cube reflector, respectively. Calcutations show that the spread can be reduced by using a long-wavelength laser as well as large transmitting and reflection radii. |
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| Keywords: | atmospheric turbulence reflected beam spread |
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