The influence of the horizontal atmosphere on transmission efficiency of the laser eavesdropping

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI:10.1117/12.3000208

Lianhui Zheng, Xiaofu Xu, Xiaoyan Wang, Zhongjian Gao, Bingyang Liu, Huixian Lan, Yangyi Liu

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Abstract

Horizontal atmosphere will obviously distort the light spot notably and attenuate the transmission efficiency of a laser eavesdropping. However, the contributions of ambient parameters to the transmission efficiency of laser eavesdropping are still unknown. Therefore, the influence of horizontal atmospheric fluctuation on the transmission efficiency of laser eavesdropping is investigated by carrying out theoretical analysis and validation. The mean and standard deviation of the fluctuation of the ambient variables are adopted to analyze the influence on the transmission efficiency and the statistical conclusions are attained, which can be used to predict the mean transmission efficiency. To improve the transmission efficiency, a new method based on Gerchberg-Saxton (GS) phase retrieval algorithm is proposed by integrating a Nicol grating into the optical system, hence the configuration is simple and the size is compact. The experimental results reveal that the transmission efficiency is notably improved after GS correction. The proposed method is proved to be feasible.

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水平大气层对激光窃听传输效率的影响

水平方向的大气会明显扭曲光斑，削弱激光窃听的传输效率。然而，环境参数对激光窃听传输效率的贡献尚不清楚。因此，通过理论分析和验证，研究了水平大气波动对激光窃听传输效率的影响。采用环境变量波动的平均值和标准偏差来分析对传输效率的影响，并得出统计结论，可用于预测平均传输效率。为了提高传输效率，提出了一种基于 Gerchberg-Saxton (GS) 相位检索算法的新方法，即在光学系统中集成一个尼克尔光栅，因此配置简单，体积小巧。实验结果表明，经过 GS 校正后，传输效率显著提高。实验证明所提出的方法是可行的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Applied Optics and Photonics China

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