三缝干涉测量涡旋光束拓扑电荷数  

Measuring the topological charge of vortex beams with three-slit interference

作　　者：徐全学 郑思敏 袁财富 王涛[2] XU Quan-xue;ZHENG Si-min;YUAN Cai-fu;WANG Tao(Department of Mathematics and Natural Sciences,Lhasa Normal College,Lhasa 850007,China;Department of Physics Electronics Engineering,Sichuan Normal University,Chengdu 610068,China)

机构地区：[1]拉萨师范高等专科学校数学和自然科学系,西藏拉萨850007 [2]四川师范大学物理与电子工程学院,四川成都610068

出　　处：《兰州理工大学学报》2022年第4期168-172,共5页Journal of Lanzhou University of Technology

摘　　要：研究了涡旋光束经三缝干涉后在干涉场中干涉条纹的分布情况,讨论了拓扑电荷数分别为整数和分数情况下对条纹分布的影响.结果表明:不同于平面波,涡旋光束经三缝干涉后的条纹沿着横向出现了移动现象,并且移动的幅度和方向与拓扑电荷数的取值有关.The distribution of interference fringes in the interference field of vortex beams after three slit interference is studied,and the effect of topological charge number on the fringe distribution is discussed on the different conditions with topological charge number of integer and fraction.It is shown that unlike the plane wave,the fringes of the vortex beam move along the lateral direction after three-slit interference,and the magnitude and direction of lateral displacement of the fringes are related to the value of topological charge.

关 键 词：涡旋光束 拓扑电荷数 三缝干涉 条纹 

分 类 号：O436.1[机械工程—光学工程]