An optical reflectarray nanoantenna: The concept and design

被引：51

作者：

Ahmadi, Akram ^{[1
]}

Ghadarghadr, Shabnam ^{[1
]}

Mosallaei, Hossein ^{[1
]}

机构：

[1] Northeastern Univ, ECE Dept, Appl EM & Opt Lab, Boston, MA 02115 USA

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1364/OE.18.000123

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper presents the concept and design of a reflectarray nanoantenna at optical frequencies whose elements are nano-sized concentric spherical particles with the core made of ordinary dielectrics and the shell made of a plasmonic material. Modeling approaches based on finite difference time domain (FDTD) numerical method and dipole-modes scattering theory are used to characterize and tune the reflectarray design. A 6x6 elements reflectarray nanoantenna operating at wavelength 357.1nm with narrow beamwidth is presented, and its scanned radiation characteristics for 15 degrees and 30 degrees are demonstrated. (C) 2009 Optical Society of America

引用

页码：123 / 133

页数：11

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