Dr. Huixian Lan Profile

Dr. Huixian Lan

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Proceedings Article | 18 December 2023 Paper

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

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

Proceedings Volume 12965, 1296504 (2023) https://doi.org/10.1117/12.3000208

KEYWORDS: Water, Optical transmission, Atmospheric propagation, Turbulence, Wavefronts, Air temperature

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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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