激光在非Kolmogorov湍流大气中传输及其相位补偿研究

量子电子学报 ›› 2019, Vol. 36 ›› Issue (6): 745-751.

激光在非Kolmogorov湍流大气中传输及其相位补偿研究

李南，乔春红，张鹏飞，冯晓星†，范承玉

中国科学院安徽光学精密机械研究所，中国科学院大气光学重点实验室，安徽合肥 230031

收稿日期:2017-11-17 修回日期:2019-06-23 出版日期:2019-11-28 发布日期:2019-11-19
通讯作者: 冯晓星（1981-），男，山东聊城人，博士，副研究员，主要从事激光大气传输等方面的研究工作。 E-mail:xxfeng@aiofm.ac.cn
作者简介:李南（1980-），女，辽宁铁岭人，博士，助理研究员，主要从事激光大气传输及激光光学参数测量方面的研究。Email：nli@aiofm.ac.cn
基金资助:
Supported by National Natural Science Foundation of China(国家自然科学基金, 61405205）

Research of Laser Propagation in the Non-Kolmogorov Turbulence Atmosphere and its Phase Compesation

LI Nan, QIAO Chunhong, ZHANG Pengfei, FENG Xiaoxing, FAN Chengyu

Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics,
Chinese Academy of Sciences, Hefei 230031, China

Received:2017-11-17 Revised:2019-06-23 Published:2019-11-28 Online:2019-11-19

摘要/Abstract

摘要： 基于非Kolmogorov湍流谱理论，建立了激光在非Kolmogorov谱湍流大气中传输的数学物理模型，并在此基础上进行了数值仿真。结果表明湍流谱指数对激光传输特性及其相位补偿有重要影响。在相同广义大气折射率结构常数条件下，湍流谱指数接近区间(3,4)两端时，激光远场光束质量较好；湍流谱指数趋向4时自适应光学相位补偿效果较好。在广义大气相干长度相同的条件下，峰值Strehl比随湍流谱指数增加而增加。另外，针对归一化功率谱下激光传输特性进行了探讨，初步揭示了激光在非Kolmogorov湍流大气中的传输机理。

关键词: 大气光学, 湍流效应, 非Kolmogorov谱, 自适应光学, 相位补偿

Abstract: Based on the theory of non-Kolmogorov turbulence spectrum, the mathematics and physics model of laser propagation in non-Kolmogorov spectrum turbulence atmosphere is established, and numerical simulation is carried out based on the model. Results show that the turbulence spectral index has important effects on the laser propagation characteristics and its phase compensation. Under the condition of the same generalized atmospheric refractive index structure constant, when turbulence spectral index is close to both ends of the interval(3.4),the laser beam quality of far-field is good. When turbulence spectral index is nearly to 4, the effect of adaptive optics compensation is good. Under the condition of the same generalized atmospheric coherence length, the peak Strehl ratio increases with the increase of turbulence spectral index. In addition, the laser propagation characteristics under normalization power spectrum are discussed. The propagation mechanism of laser in non-Kolmogorov turbulence atmosphere is preliminary revealed

Key words: atmospheric optics, turbulence effect, non-Kolmogorov spectrum, adaptive optics, phase compensation

李南, 乔春红, 张鹏飞, 冯晓星†, 范承玉. 激光在非Kolmogorov湍流大气中传输及其相位补偿研究[J]. 量子电子学报, 2019, 36(6): 745-751.

LI Nan, QIAO Chunhong, ZHANG Pengfei, FENG Xiaoxing, FAN Chengyu. Research of Laser Propagation in the Non-Kolmogorov Turbulence Atmosphere and its Phase Compesation[J]. Chinese Journal of Quantum Electronics, 2019, 36(6): 745-751.

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