Numerical Simulation and Analysis of Beam Wander and Spot Radius for Sodium Laser Beacon

Journal of Atmospheric and Environmental Optics ›› 2015, Vol. 10 ›› Issue (5): 357-367.

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Numerical Simulation and Analysis of Beam Wander and Spot Radius for Sodium Laser Beacon

LIU Xiangyuan1,2,3, LI Yujie1,3, QIAN Xianmei1,*, RAO Ruizhong1

(1.Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
2. College of Materials and Chemical Engineering, West Anhui University, Lu’an 237012, China;
3. University of Chinese Academy of Sciences, Beijing 100039,China)

Received:2014-04-15 Revised:2015-05-11 Online:2015-09-28 Published:2015-09-11

Abstract

Abstract:

The beam wander and spot radius of Sodium Laser Beacon (SLB) have direct effects on correction of adaptive optics. Based on wander variance and effective radius model of SLB, the differences in these aspects between SLB and laser are studied under the three atmospheric turbulence models by the numerical simulation method. Then, the average effective radius of SLB spot for the long-exposure and short-exposure is calculated for different laser launch diameters. Effects of laser with repumping power on beam wander and spot radius of SLB are analyzed. Results show that the strength of atmospheric turbulence, laser launch diameters and the repumping power have influence on beam wander and spot radius of SLB.

Key words: sodium laser beacon, wander variance, average effective radius, laser with repumping energy

CLC Number:

O436

LIU Xiang-Yuan, LI Yu-Jie, QIAN Xian-Mei, RAO Rui-Zhong. Numerical Simulation and Analysis of Beam Wander and Spot Radius for Sodium Laser Beacon[J]. Journal of Atmospheric and Environmental Optics, 2015, 10(5): 357-367.

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Numerical Simulation and Analysis of Beam Wander and Spot Radius for Sodium Laser Beacon

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