Effect of aperture averaging on four petal Gaussian beams in atmospheric turbulence
نویسندگان
چکیده
Aperture averaged scintillation of four petal Gaussian beam is studied in this article. Split step propagation approach which used wave applications selected to model atmospheric turbulence. Results are plotted two types. First type the analysis aperture versus distance for constant receiver aperture. Second ones involve performance applying averaging at distance. All results compared with Gauss since commercial lasers generally radiates distribution. We observe that becomes more advantageous under moderate turbulence than weak one. In other point view, it possible obtain less index by increasing order. Our applicable optical operating atmosphere.
منابع مشابه
Off-Axis Gaussian Beams with Random Displacement in Atmospheric Turbulence
Our recent work in which we study the propagation of the general Hermite-sinusoidal-Gaussian laser beams in wireless broadband access telecommunication systems is elaborated in this paper to cover the special case of an off-axis Gaussian beam. We mainly investigate the propagation characteristics in atmospheric turbulence of an off-axis Gaussian beam possessing Gaussian distributed random displ...
متن کاملAverage Intensity and Spreading of Par- Tially Coherent Four-petal Gaussian Beams in Turbulent Atmosphere
The concept of partially coherent four-petal Gaussian (PCFPG) beam is introduced and described in analytical forms. Based on the Huygens-Fresnel integral formula, average intensity and beam spreading in turbulent atmosphere are derived in analytical expressions. Effects of beam parameters and atmospheric structure constant on intensity distributions and effective beam sizes are investigated in ...
متن کاملAperture averaging of the two-wavelength intensity covariance function in atmospheric turbulence.
The influence of aperture averaging on the two-wavelength intensity covariance function was experimentally determined for visible (0.63 microm) and infrared (1.06 microm) collinear, approximately spherical beams which propagated through the earth's turbulent atmosphere. Range varied from 1300 to 3250 m, and due to the prevailing atmospheric conditions, most measurements were made in the strong ...
متن کاملWander and Spreading of Gaussian-Schell Model Beams Propagating through Anisotropic Marine-Atmospheric Turbulence
The effects of anisotropic turbulence on the wander and spreading of Gaussian-Schell model beams propagating in non-Kolmogorov marine-atmospheric channel are investigated. Expressions for beam wander and long-term beam spreading are derived in all conditions of marine-atmospheric turbulence. Our results indicate that the beam wander and spreading of Gaussian-Schell model beams are lower in the ...
متن کاملScintillation of pseudo-Bessel correlated beams in atmospheric turbulence.
The concept of pseudo-Bessel correlated beams is introduced, and their scintillation properties on propagation through turbulence are investigated. By using the Rytov approximation, the scintillation index of pseudo-Bessel correlated beams is formulated in weak turbulence. The study of scintillation is extended into strong turbulence by numeric simulations. It is shown that by choosing an appro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International advanced researches and engineering journal
سال: 2021
ISSN: ['2618-575X']
DOI: https://doi.org/10.35860/iarej.803508