强激光与粒子束2011，Vol.23Issue(10)：2630-2634,5.DOI:10.3788/HPLPB20112310.2630
平顶高斯光束在梯度折射率介质中的传输特性
Propagation properties of flattened Gaussian beams in gradient-index media
摘要
Abstract
By using the method of generalized Huygens-Fresnel diffraction integral, the transmission analytical expression of flattened Gaussian beams in gradient-index media is deduced. The influence on the propagation properties of the medium gradient refractive index coefficient and the beam order is discussed. The results show that when flattened Gaussian beams propagate in gradient-index media, the intensity distribution on the axis varies periodically. Its change period is decided by the gradient-index coefficient, and has nothing to do with the beam order. The transverse intensity distribution of the peak on the axis is affected largely by the gradient-index coefficient and the beam order. The maximum on the plane with transversal intensity increases with the increase of the gradient-index coefficient.关键词
平顶高斯光束/广义衍射积分法/梯度折射率介质/传输特性/近轴光学系统Key words
flattened Gaussian beams/generalized diffraction integral/ gradient-index media/ propagation properties/ paraxial optical system分类
数理科学引用本文复制引用
宋宏远,张廷蓉,陈森会,黄永超,李艳桃,张伟林..平顶高斯光束在梯度折射率介质中的传输特性[J].强激光与粒子束,2011,23(10):2630-2634,5.基金项目
四川省教育厅重点项目(09ZA089) （09ZA089）
