Axial intensity distribution of truncated Bessel-Gauss beams in a turbulent atmosphere

被引：21

作者：

Cang, Ji ^{[1
]}

Zhang, Yixin ^{[1
]}

机构：

[1] Jiangnan Univ, Sch Sci, Wuxi 214122, Peoples R China

来源：

OPTIK | 2010年 / 121卷 / 03期

关键词：

Bessel-Gauss beams; Topological charge; Extended Huygens-Fresnel principle; Atmospheric turbulence; Average intensity; PARAXIAL OPTICAL-SYSTEMS; PROPAGATION; APERTURE;

D O I：

10.1016/j.ijleo.2008.06.011

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By means of the extended Huygens-Fresnel integral formula in the paraxial approximation and based on the fact that a hard aperture function can be expanded into a finite sum of complex Gaussian functions, an approximate analytical expression for Bessel-Gauss beams propagating in it turbulent atmosphere truncated by an aperture has been derived. The result is more convenient for studying the axial intensity distribution properties of Bessel-Gauss beams with different topological charges in a turbulent atmosphere than the usual way by using diffraction integral directly. Utilizing the analytical expression, the axial intensity distribution of such kind of beam in a turbulent atmosphere is investigated numerically in detail. Results show that the intensity distribution on the axis changes with the variation of the beam topological charge in, the wavelength and beam waist width of the initial beam and the turbulent strength. (C) 2008 Elsevier GmbH. All rights reserved.

引用

页码：239 / 245

页数：7

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