Light transmission through a circular metallic grating under broadband radial and azimuthal polarization illumination

被引：18

作者：

Lerman, Gilad M. ^{[1
]}

Grajower, Meir ^{[1
]}

Yanai, Avner ^{[1
]}

Levy, Uriel ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Dept Appl Phys, Benin Sch Engn & Comp Sci, Ctr Nanosci & Nanotechnol, IL-91904 Jerusalem, Israel

来源：

OPTICS LETTERS | 2011年 / 36卷 / 20期

关键词：

EXTRAORDINARY OPTICAL-TRANSMISSION; SUBWAVELENGTH APERTURE; ARRAYS; MECHANISMS;

D O I：

10.1364/OL.36.003972

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We studied the characteristics of a circular metallic grating illuminated by broadband radial and azimuthal polarizations. We demonstrated that this scenario is the cylindrical analogue of a one-dimensional Cartesian grating illuminated by TM and TE polarizations. We measured the transmission spectra of this structure and observed strong polarization selectivity and, specifically, a resonance for radial polarization excitation, indicating a strong coupling to surface plasmons. The structure may be attractive for applications where pure radial polarization is needed, such as tight focusing, material processing, and particle trapping. (C) 2011 Optical Society of America

引用

页码：3972 / 3974

页数：3

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