Design and experimental demonstration of a plasmonic directional beaming device

被引：6

作者：

Hao, Fenghuan ^{[1
]}

Zhang, Mingqian ^{[2
]}

Wang, Qingyan ^{[2
]}

Wang, Jia ^{[2
]}

Wang, Rui ^{[3
]}

Ge, Huiliang ^{[1
]}

机构：

[1] Hangzhou Appl Acoust Res Inst, Hangzhou 310012, Zhejiang, Peoples R China

[2] Tsinghua Univ, State Key Lab Precis Measurement Technol & Instru, Dept Precis Instruments, Beijing 100084, Peoples R China

[3] Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2012年 / 29卷 / 08期

基金：

中国国家自然科学基金;

关键词：

DIELECTRIC SURFACE GRATINGS; METALLIC FILM; LIGHT; NANOSLIT;

D O I：

10.1364/JOSAB.29.002255

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We design and demonstrate experimentally a plasmonic directional beaming device with an expected beam angle, which consists of a slit-grooves structure in Au/Cr metal layers. The directional beaming phenomenon is achieved by modulating the phases of the radiation light diffracted by grooves from surface plasmon polariton and controlling the wavefront of the transmitted light to propagate toward the desired direction. The transmitted field through the demonstration beaming device is simulated with finite-difference time-domain method and visualized using scanning near-field optical microscope. The simulation and experimental results both show a significant directional beaming effect and are in good agreement with theoretical expectation. Such a plasmonic beaming device has potential applications in optical interconnection, display, and illumination. (c) 2012 Optical Society of America

引用

页码：2255 / 2259

页数：5

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