Simulation of laser beam propagation through the troposphere

Bao-feng Wang; Xiu-juan Luo; Yu Zhang; Zhi-hong Zeng; Feng Wang

doi:10.1117/12.2032170

19 September 2013 Simulation of laser beam propagation through the troposphere

Bao-feng Wang, Xiu-juan Luo, Yu Zhang, Zhi-hong Zeng, Feng Wang

Proceedings Volume 8905, International Symposium on Photoelectronic Detection and Imaging 2013: Laser Sensing and Imaging and Applications; 89050D (2013) https://doi.org/10.1117/12.2032170
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Understanding and predicting laser beam propagation effects in the atmosphere is important for laser applications. Turbulence effects cause beam wander, beam broadening, intensity scintillations, which reducing the power in bucket and the tracking accuracy, etc. In this work, the phase screens are used to model atmosphere turbulence in the model of the laser propagation through troposphere. And according to the characteristics of the troposphere，a layered model is used. Laser propagation follows the Huygens-Fresnel principle between phase screens. Simulations with different grid point numbers were constructed, and numerical experiments were conducted. According to the simulated results including Strehl ratio, sharpness, and amplitude distribution, preceding phase screens have effect on the total energy of the receiving surface, but have little impact on amplitude distribution. And the phase screens, which are close to the receiving surface, have a significant impact on both amplitude distribution and the total receiving energy. The results suggests that in simulation one should increase grid point numbers as many as possible and needs to pay particular attention to parameters of the phase screens near the receiving surface in simulation.

Citation Download Citation

Bao-feng Wang, Xiu-juan Luo, Yu Zhang, Zhi-hong Zeng, and Feng Wang "Simulation of laser beam propagation through the troposphere", Proc. SPIE 8905, International Symposium on Photoelectronic Detection and Imaging 2013: Laser Sensing and Imaging and Applications, 89050D (19 September 2013); https://doi.org/10.1117/12.2032170

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KEYWORDS

Atmospheric propagation

Turbulence

Laser beam propagation

Atmospheric modeling

Computer simulations

Atmospheric laser remote sensing

Troposphere

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