Optics and Photonics Society of Iran

In this research, as one of the most important statistical characteristics of the laser beams, with the extension of Huygens-Fresnel principle from free space to media with random refractive index and using it to reduce approximations and to close to the real conditions, propagation behavior of the polarization degree of a partially coherent phase-locked radial flat-topped laser beam array in oceanic turbulence is investigated theoretically. For achieving this aim, analytical expression for the cross spectral density matrix is derived and then, analytical formula for studying intensity and the spectral degree of polarization are reported. The effects of structural parameters of optical turbulence such as the relative strength of temperature and salinity fluctuations, &omega , Kolmogorov microscale, &eta , and rates of dissipation of the mean squared temperature &Chi_T and turbulent kinetic energy per unit mass of fluid, &epsilon , on polarization have been studied along with the effect of source coherence variations. Results demonstrate that variations range of spectral degree of polarization for larger values of &epsilon , &eta , smaller values of rates of dissipation of the mean squared temperature and for the condition which temperature fluctuations in the ocean dominate salinity fluctuations, increase. The achieving conclusion indicated by graphs.