Numerical analysis of thermal effects on laser beam propagation

Gang Jin; Shumin Li; Shunfa Liu; Hongbin Chen; Jiaguang Ma

doi:10.1117/12.453238

22 January 2002 Numerical analysis of thermal effects on laser beam propagation

Gang Jin, Shumin Li, Shunfa Liu, Hongbin Chen, Jiaguang Ma

Proceedings Volume 4489, Free-Space Laser Communication and Laser Imaging; (2002) https://doi.org/10.1117/12.453238
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

This paper presents the numerical analysis about the thermal effects, produced by the high-energy laser in a beam control system, on the laser beam propagation. The propagation of laser is described by the paraxial wave equations, solved by the phase-screen technique and the FFT method. The thermal turbulence motion and the air density variation are governed by the complete Navier-Stokes equations, so that the variety factors could be in consideration. The Navier-Stokes equations are solved by using the LU-SGS factorization technique. The methods could be used for other kinds of aero-optical problems. The numerical results show that, with the additional initial thermal-phase, the energy concentration and the quality of the laser beam at far field would be prominently degraded for the typical situations.

Citation Download Citation

Gang Jin, Shumin Li, Shunfa Liu, Hongbin Chen, and Jiaguang Ma "Numerical analysis of thermal effects on laser beam propagation", Proc. SPIE 4489, Free-Space Laser Communication and Laser Imaging, (22 January 2002); https://doi.org/10.1117/12.453238

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