key project of Hunan Provincial Education DepartmentHunan Provincial Education Department [11A018]; Natural Science Foundation of Hunan ProvinceNatural Science Foundation of Hunan Province [11JJ3076]; Construct Program of the Key Discipline in Hunan Province
机构署名：
本校为第一且通讯机构
院系归属：
物理与电子工程学院
摘要：
Propagation of a hollow Gaussian beam diffracted by a circular phase aperture is studied without making the paraxial approximation. The analytical expression of the intensity of the apertured hollow Gaussian beam is presented in the far field. The influences of the truncation parameter and the order of hollow Gaussian beam on the intensity distributions are discussed. It is shown that a circular Ï¿-phase aperture can be used to transform a hollow Gaussian beam into a ring-shaped beam in the far f...
