Surface plasmons on zig-zag gratings

被引：5
作者：
Constant, Thomas J. [1 ]
Taphouse, Tim S. [2 ]
Rance, Helen J. [1 ]
Kitson, Stephen C. [2 ]
Hibbins, Alastair P. [1 ]
Sambles, J. Roy [1 ]
机构：
[1] Univ Exeter, Dept Phys & Astron, Exeter EX4 4QL, Devon, England
[2] Hewlett Packard Labs, Bristol BS34 8QZ, Avon, England
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 21期
基金：
英国工程与自然科学研究理事会;
关键词：
DIFFRACTION GRATINGS; METALLIC GRATINGS; TOTAL ABSORPTION; TRANSMISSION; LIGHT; GAPS;
D O I：
10.1364/OE.20.023921
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Optical excitation of surface plasmons polaritons (SPPs) on a 'zig-zag diffraction grating' is explored. The fabricated silver grating consists of sub-wavelength grooves 'zig-zagged' along their length, providing a diffractive periodicity to visible radiation. SPPs propagating in the diffraction plane and scattered by an odd number of grating vectors are only excited by TE polarized radiation, whereas for TM polarized light, which also induces surface charge, SPP excitation is forbidden by the grating's broken-mirror symmetry. (C) 2012 Optical Society of America
引用
收藏
页码：23921 / 23926
页数：6
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