Propagation of Four-Petal Gaussian Beams in Turbulent Atmosphere
CHU Xiu-Xiang1,2, LIU Ze-Jin1, WU Yi2
1College of Optoelectronic Science and Engineering, National University of Defence Technology, Changsha 4100732Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031
Propagation of Four-Petal Gaussian Beams in Turbulent Atmosphere
CHU Xiu-Xiang1,2;LIU Ze-Jin1;WU Yi2
1College of Optoelectronic Science and Engineering, National University of Defence Technology, Changsha 4100732Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031
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.
Abstract：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.
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2008, Vol. 25 
