Beam manipulating by metallic nano-slits with variant widths

被引：357

作者：

Shi, HF ^{[1
]}

Wang, CT ^{[1
]}

Du, CL ^{[1
]}

Luo, XG ^{[1
]}

Dong, XC ^{[1
]}

Gao, HT ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Sichuan, Peoples R China

来源：

OPTICS EXPRESS | 2005年 / 13卷 / 18期

关键词：

D O I：

10.1364/OPEX.13.006815

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel method is proposed to manipulate beam by modulating light phase through a metallic film with arrayed nano-slits, which have constant depth but variant widths. The slits transport electro-magnetic energy in the form of surface plasmon polaritons (SPPs) in nanometric waveguides and provide desired phase retardations of beam manipulating with variant phase propagation constant. Numerical simulation of an illustrative lens design example is performed through finite-difference timedomain (FDTD) method and shows agreement with theory analysis result. In addition, extraordinary optical transmission of SPPs through subwavelength metallic slits is observed in the simulation and helps to improve elements ' energy using factor. (c) 2005 Optical Society of America.

引用

页码：6815 / 6820

页数：6

共 12 条

[1] Surface plasmon subwavelength optics [J].