Plasmonic tomography of optical vortices

被引：3

作者：

Chimento, Philip F. ^{[1
]}

't Hooft, Gert W. ^{[1
]}

Eliel, Eric R. ^{[1
]}

机构：

[1] Leiden Univ, Huygens Lab, NL-2300 RA Leiden, Netherlands

来源：

OPTICS LETTERS | 2010年 / 35卷 / 22期

关键词：

ORBITAL ANGULAR-MOMENTUM; GAUSSIAN LASER MODES; WAVE-FRONTS; DISLOCATIONS; LIGHT;

D O I：

10.1364/OL.35.003775

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a method for analyzing the wavefront of optical vortices that does not involve interferometry but rather uses surface plasmon polaritons (SPPs). We employ a subwavelength slit in a gold film to cut slices from an optical vortex beam and measure the diffraction of the generated SPPs by scattering them off a second slit. By moving the slits across the vortex beam, we create a tomogram, from which we can determine the vortex charge of the incident beam at a glance. We present results for vortex beams of integer-and half-integer-vortex charge. (C) 2010 Optical Society of America

引用

页码：3775 / 3777

页数：3

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