Angular spread of partially coherent Hermite-cosh-Gaussian beams propagating through atmospheric turbulence.
The propagation of partially coherent Hermite-cosh-Gaussian (H-ChG)beams through atmospheric turbulence is studied in detail. The analytical expression for the angular spread of partially coherent H-ChG beams in turbulence is derived. It is shown that the angular spread of partially coherent H-ChG beams with smaller spatial correlation length sigma0, smaller waist width w0, smaller beam parameter Omega0, and larger beam orders m, n is less affected by turbulence than that of partially coherent H-ChG beams with larger sigma0, w0, Omega0, and smaller m, n. Under a certain condition partially coherent H-ChG beams may generate the same angular spread as a fully coherent Gaussian beam in free space and also in atmospheric turbulence. The angular spread of partially coherent Hermite-Gaussian (H-G), cosh-Gaussian (ChG), Gaussian Schell-model (GSM) beams, and fully coherent H-ChG, H-G, ChG, Gaussian beams is studied and treated as special cases of partially coherent H-ChG beams. The results are interpreted physically.
Institute of Laser Physics and Chemistry, Sichuan University, Chendu 610064, China.
Ailin
A
Yang
Entao
E
Zhang
Xiaoling
X
Ji
Baida
B
Lü
D001272:Atmosphere; D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D015233:Models, Statistical; D017711:Nonlinear Dynamics; D016011:Normal Distribution; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation