Propagation of Four-Petal Gaussian Beams in Turbulent Atmosphere  

作　　者：储修祥 刘泽金 吴毅 

机构地区：[1]College of Optoelectronic Science and Engineering, National University of Defence Technology, Changsha 410073 [2]Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031

出　　处：《Chinese Physics Letters》2008年第2期485-488,共4页中国物理快报（英文版）

摘　　要：An analytical expression for the average intensity of four-petal Gaussian beams in turbulent atmosphere is derived. Studies show that in turbulent atmosphere, the contour lines of four-petal Gaussian beams with lower order N evolve into a number of petals with the increase in propagation distance, the contour lines with higher order N can reserve four-petal distribution at longer propagation distance than that with lower order N. These properties are similar to those in free space. However, with further increases of the propagation distance, the contours lines in turbulent atmosphere are different from those in free space.An analytical expression for the average intensity of four-petal Gaussian beams in turbulent atmosphere is derived. Studies show that in turbulent atmosphere, the contour lines of four-petal Gaussian beams with lower order N evolve into a number of petals with the increase in propagation distance, the contour lines with higher order N can reserve four-petal distribution at longer propagation distance than that with lower order N. These properties are similar to those in free space. However, with further increases of the propagation distance, the contours lines in turbulent atmosphere are different from those in free space.

关 键 词：PULSARS x-ray spectra relativity and gravitation REDSHIFT 

分 类 号：O435[机械工程—光学工程]