Numerical simulation of thermal blooming in atmospheric laser propagation

摘要

Abstract: Laser propagating through atmosphere is distorted by thermal blooming and turbulence. Thermal blooming in atmospheric laser propagation is studied using Fast Fourier Transform (FFT). Variation of steady state thermal blooming with laser power and propagation distance are shown and power threshold is also calculated. Time-dependent thermal blooming effects with and without wind are investigated. Comparisons between simulated and experimental results reach good agreements. !7