华侨大学学报（自然科学版）2017，Vol.38Issue(5)：706-709,4.DOI:10.11830/ISSN.1000-5013.201703076
采用轴棱锥检测涡旋光束拓扑电荷数的方法
Methods for Detecting Topological Charge Number of Vortex Beams Using Axicon
摘要
Abstract
Based on Kirchhoff diffraction integral theory,the expressions of diffraction field after the axicon and convex lens that illuminated by an oblique vortex beam are derived.A simple and feasible method for detecting topological charge number by using an axicon is proposed.We compare this method with that of using convex lens,results show that there is no need to fix detection point strictly by using an axicon.In practice,this method shows more flexibility and applicability.Experiments are designed to verify the researches.Experimental results are in good agreement with theoretical predictions and numerical simulation.关键词
衍射积分理论/涡旋光/轴棱锥/拓扑电荷数Key words
diffraction integral theory/vortex beam/axicon/topological charge number分类
数理科学引用本文复制引用
胡润,吴逢铁,杨艳飞..采用轴棱锥检测涡旋光束拓扑电荷数的方法[J].华侨大学学报（自然科学版）,2017,38(5):706-709,4.基金项目
国家自然科学青年基金资助项目(61605049) （61605049）
福建省科技计划重大项目(2016H6016) （2016H6016）
