Effect Of Turbulent Diffusion On Laser Propagation

Peter I -Wu Shen

doi:10.1117/12.951739

8 August 1989 Effect Of Turbulent Diffusion On Laser Propagation

Peter I -Wu Shen

Proceedings Volume 1060, Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere; (1989) https://doi.org/10.1117/12.951739
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

The short time behavior of turbulent diffusion in the planetary boundary layer for various atmospheric conditions is reviewed. The magnitude of turbulent diffusion is derived for the Von Karman spectrum (modified Kolmogorov spectrum), which is widely used for propagation analyses. The effect of turbulent diffusion on thermal blooming is evaluated by using the time-dependent, turbulent diffusivity model. The results show that turbulent diffusion introduces significant defocus to the phase front of the laser beam. The length and time scales of turbulent diffusion are also assessed for various atmospheric conditions. The finite scales may play an important role in alleviating growth of thermal blooming instability, but the effect of turbulent diffusion on instability is not assessed.

Citation Download Citation

Peter I -Wu Shen "Effect Of Turbulent Diffusion On Laser Propagation", Proc. SPIE 1060, Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere, (8 August 1989); https://doi.org/10.1117/12.951739

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