Split in phase singularities of an optical vortex by off-axis diffraction through a simple circular aperture

被引：26

作者：

Taira, Yoshitaka ^{[1
,2
]}

Zhang, Shukui ^{[3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Natl Metrol Inst Japan, Res Inst Measurement & Analyt Instrumentat, Tsukuba Cent 2,1-1-1 Umezono, Tsukuba, Ibaraki 3058568, Japan

[2] Mississippi State Univ, Dept Phys & Astron, 355 Lee Blvd,125 Hilbun Hall, Mississippi State, MS 39762 USA

[3] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA

来源：

OPTICS LETTERS | 2017年 / 42卷 / 07期

基金：

日本学术振兴会;

关键词：

ORBITAL ANGULAR-MOMENTUM; DOUBLE-SLIT INTERFERENCE; LAGUERRE-GAUSSIAN BEAMS; TRIANGULAR APERTURE; TOPOLOGICAL CHARGE; LASER-BEAMS; VORTICES; STATES; LIGHT;

D O I：

10.1364/OL.42.001373

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Diffraction patterns of an optical vortex through several shaped apertures reveal its topological charge. In this Letter, we theoretically and experimentally show that diffraction of a Laguerre Gaussian beam through a circular aperture at an off-axis position can be used to determine the magnitude and sign of the topological charge. To our knowledge, this is the first time that a simple circular aperture has been used to detect orbital angular momentum of an incident optical vortex. (C) 2017 Optical Society of America

引用

页码：1373 / 1376

页数：4

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