Beaming light from a subwavelength metal slit surrounded by dielectric surface gratings

被引：80

作者：

Lin, DZ ^{[1
]}

Chang, CK

Chen, YC

Yang, DL

Lin, MW

Yeh, JT

Liu, JM

Kuan, CH

Yeh, CS

Lee, CK

机构：

[1] Natl Taiwan Univ, Inst Appl Mech, Taipei 10764, Taiwan

[2] Ind Technol Res Inst, Mat & Chem Res Labs, Hsinchu, Taiwan

[3] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan

[4] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 10764, Taiwan

[5] Natl Taiwan Univ, Dept Engn Sci & Ocean Engn, Taipei 10764, Taiwan

来源：

OPTICS EXPRESS | 2006年 / 14卷 / 08期

关键词：

D O I：

10.1364/OE.14.003503

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this article, we demonstrate that a subwavelength metal slit surrounded by dielectric surface gratings possesses a directional beaming effect. We propose a surface plasmon diffraction scheme to explain the three kinds of beaming conditions. The numerical simulations of the illustrative structures undertaken used a Finite Difference Time Domain (FDTD) Method and a Rigorous Coupled Wave Analysis (RCWA) Method. Our simulations were found to be consistent and in agreement with the experimental results. In comparison with other metal structures, we find that dielectric metal structures offer better performance as well as the advantage of being able to be efficiently mass produced for large volume industrial applications. (c) 2006 Optical Society of America.

引用

页码：3503 / 3511

页数：9

共 11 条

[1] Theory of diffraction by small holes [J].