Influence of Diffractive Optical Elements on Multiple Spherical Spots in a 4π Focusing System

被引：2

作者：

Duan Huihui ^{[1
]}

Yang Yanfang ^{[1
]}

He Ying ^{[1
]}

Yan Xiyu ^{[1
]}

Li Lulu ^{[1
]}

机构：

[1] Shanghai Univ, Coll Sci, Dept Phys, Shanghai 200444, Peoples R China

来源：

ACTA OPTICA SINICA | 2021年 / 41卷 / 20期

关键词：

physical optics; polarization; diffractive optical element; 4 pi focusing system; spherical spot; TWEEZERS; BEAM;

D O I：

10.3788/AOS202141.2026001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The effect of diffractive optical elements (DOE) modulating the incident light field on the focusing field is studied. The 4 pi focusing properties of Bessel-Gaussian beams radially polarized after modulated by several different DOEs are analyzed via the Richards-Wolf vector diffraction theory. The numerical simulation results show that multiple spherical spots of potential applications form near the focal plane, and the number of spherical spots is related to that of the belts on DOE, while the DOE transmission function has little influence upon it. Moreover, the number of spherical spots increases with that of the belts on the DOE.

引用

页数：6

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