مدل سازي اثرات آشوبي جو بر انتشار پرتو ليزر

كارشناسي ارشد

Abstract Laser beam propagation through turbulent atmosphere has been studied extensively for many years because of its importance in low-power beam transmission in to the atmosphere .When a low-power laser beam propagates through the atmosphere , it has been affected by several phenomena named " absorption " , " scattering " , " turbulent effects ", ... which " turbulent effects " are considered extremely because of their extensive usage in recent technologies such as optical telecommunication. In this thesis , we evaluate the propagation of a Gaussian laser beam in turbulent atmosphere numerically . Various types of turbulent conditions are considered as different values of " turbulent parameter ( n C ) " . The "quality factor" of the beam has studied under different atmospheric conditions as an important factor in recent optical technologies like Free Space Optics (FSO) . We have also consider different values of beam diameter and wavelength to optimize the quality factor of the beam . The results show that the beam quality can be affected dramatically by atmospheric turbulence and would decrees with the increase of turbulent effects.

202381

دانشگاه علم و صنعت ايران

فيزيك اتمي و مولكولي

دكتر محمد حسين مهديه