Electromagnetic energy vortex associated with sub-wavelength plasmonic Taiji marks

被引：52

作者：

Chen, Wei Ting ^{[1
]}

Wu, Pin Chieh ^{[1
]}

Chen, Chen Jung ^{[1
]}

Chung, Hung-Yi ^{[1
]}

Chau, Yuan-Fong ^{[2
]}

Kuan, Chieh-Hsiung ^{[4
]}

Tsai, Din Ping ^{[3
,5
]}

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[2] Ching Yun Univ, Dept Elect Engn, Jhongli 320, Taiwan

[3] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan

[4] Natl Taiwan Univ, Dept Elect Engn, Taipei 10617, Taiwan

[5] Instrument Technol Res Ctr, Natl Appl Res Lab, Hsinchu 300, Taiwan

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 19期

关键词：

SINGULAR OPTICS;

D O I：

10.1364/OE.18.019665

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The Taiji symbol is a very old schematic representation of two opposing but complementary patterns in oriental civilization. Using electron beam lithography, we fabricated an array of 70 x 70 gold Taiji marks with 30nm thickness and a total area of 50 x 50 mu m(2) on a fused silica substrate. The diameter of each Taiji mark is 500nm, while the period of the array is 700nm. Here we present experimental as well as numerical simulation results pertaining to plasmonic resonances of several Taiji nano-structures under normal illumination. We have identified a Taiji structure with a particularly interesting vortex-like Poynting vector profile, which could be attributed to the special shape and dimensions of the Taiji symbol. (C) 2010 Optical Society of America

引用

页码：19665 / 19671

页数：7

共 16 条

[1] OBSERVATION OF BOSE-EINSTEIN CONDENSATION IN A DILUTE ATOMIC VAPOR [J].