Topological Shaping of Light by Closed-Path Nanoslits

被引：52

作者：

Brasselet, Etienne ^{[1
]}

Gervinskas, Gediminas ^{[2
,3
]}

Seniutinas, Gediminas ^{[2
,3
]}

Juodkazis, Saulius ^{[2
,3
]}

机构：

[1] Univ Bordeaux, CNRS, Lab Ondes & Mat Aquitaine, UMR 5798, F-33400 Talence, France

[2] Swinburne Univ Technol, Fac Engn & Ind Sci, Ctr Microphoton, Hawthorn, Vic 3122, Australia

[3] Australian Natl Fabricat Facil, Melbourne Ctr Nanofabricat, Clayton, Vic 3168, Australia

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 19期

关键词：

ORBITAL ANGULAR-MOMENTUM; PHASE OPTICAL-ELEMENTS; CONVERSION; BEAMS;

D O I：

10.1103/PhysRevLett.111.193901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a discrete set of continuous deformation of a circular nanoslit to generate and control optical vortices at the microscopic scale. The process relies on the interplay between the spin and orbital angular momentum degrees of freedom of light mediated by appropriate closed-path nanoslits milled on a thin gold film. Topological shaping of light is experimentally demonstrated in the visible domain. Moreover, all experimental observations are quantitatively validated by a simple model that takes into account the transverse manipulation of the optical phase via the space-variant form birefringence of subwavelength slits.

引用

页数：5

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