Focusing of high polarization order axially-symmetric polarized beams

作     者：周哲海 谭峭峰 金国藩 

作者机构：State Key Laboratory of Precision Measurement Technology and InstrumentsTsinghua University Department of Optical Information Science & TechnologyBeijing Information Science & Technology University 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2009年第7卷第10期

页      面：938-940页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National Basic Research Program of China (No.2007CB935303) 

主　　题：Particle beams Polarization 

摘      要：We study the high numerical aperture focusing properties and typical applications of axially-symmetric polarized beams （ASPBs） with high polarization orders. We calculate the field distribution near focus of an aplanatic system for incident ASPBs with different polarization orders and initial azimuthal angles, and based on the simulation results, we find some unique focusing properties of the beams, such as ever on-axis energy null, strong longitudinal field, and flowerlike intensity distribution at focus. In addition, we can manipulate the three-dimensional （3D） focused field distribution flexibly by use of diffractive optical elements （DOEs）, which will give rise to some interesting applications, and we also discuss possible applications and present an example of a 3D optical chain at last.