Extraordinary Transmission of Light Through Freestanding Au Films with Subwavelength Apertures and Double Slits

被引：1

作者：

Kim, Hyuntae ^{[1
]}

Choi, Soobong ^{[1
]}

Choi, Seong Soo ^{[2
]}

Park, Woongkyu ^{[3
,4
]}

Byeon, Clare Chisu ^{[5
]}

机构：

[1] Incheon Natl Univ, Dept Phys, Incheon 22012, South Korea

[2] SunMoon Univ, Res Ctr Nanobio Sci, Ahsan 31460, South Korea

[3] Seoul Natl Univ, Dept Phys & Astron, Seoul 08826, South Korea

[4] Seoul Natl Univ, Ctr Atom Scale Electromagnetism, Seoul 08826, South Korea

[5] Kyungpook Natl Univ, Sch Mech Engn, Daegu 41566, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2019年 / 74卷 / 02期

关键词：

Freestanding metal film; Plasmonics; Double slits; Optical waveguiding; RESONANCES;

D O I：

10.3938/jkps.74.164

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrated the extraordinary transmission of light through a freestanding Au thin film with a 7x7 subwavelength aperture array and double slits. Firstly, we observed the dependence of the change in the light transmission through a plasmonic structure on the pitch size of the aperture array. Also, we fabricated a freestanding Au thin film to avoid the effects of absorption and reflection of the substrate. We perforated the 7x7 subwavelength hole array on the Au film for extraordinary optical transmission caused by the electric field enhancement from the structures. Additionally, we designed a hybrid structure composed of 7x7 subwavelength apertures and double slits to enhance the transmission of the light. The normalized-to-area transmission of the hybrid structures was approximately five times greater than that of the structures without double slits.

引用

页码：164 / 167

页数：4

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