13 September 2010 Statistics of phase singularity of a speckle field in atmospheric turbulence
Author Affiliations +
Proceedings Volume 7387, Speckle 2010: Optical Metrology; 73871H (2010) https://doi.org/10.1117/12.868315
Event: Speckle 2010, 2010, Florianapolis, Brazil
Abstract
Numerical experiments are carried out for a plane wave propagating in atmospheric turbulence and reflected from a rough surface under weak to strong fluctuation condition. The statistical characteristics of the scintillation index and the number density of the phase singularity (or the optical vortex) are analyzed. The density of the phase singularity is evaluated as a function of the Rytov index, the Fresnel length, the correlation scale and roughness of the surface. Correlation and interaction between both types of phase singularity caused by rough surface and turbulence are analyzed. Results could provide a theoretical basis for measurement of surface roughness under known turbulence condition or measurement of atmospheric turbulence under known surface roughness condition.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ruizhong Rao, "Statistics of phase singularity of a speckle field in atmospheric turbulence", Proc. SPIE 7387, Speckle 2010: Optical Metrology, 73871H (13 September 2010); doi: 10.1117/12.868315; https://doi.org/10.1117/12.868315
PROCEEDINGS
6 PAGES


SHARE
Back to Top