Simple fabrication of an antireflective hemispherical surface structure using a self-assembly method for the terahertz frequency range

被引：13

作者：

Kim, Dae-Seon ^{[1
]}

Kim, Dong-Ju ^{[1
]}

Kim, Dong-Hyun ^{[1
]}

Hwang, Sehyun ^{[2
]}

Jang, Jae-Hyung ^{[1
,2
,3
]}

机构：

[1] Gwangju Inst Sci & Technol, Sch Informat & Commun, Kwangju 500712, South Korea

[2] Gwangju Inst Sci & Technol, Res Inst Solar & Sustainable Energies, Kwangju 500712, South Korea

[3] WCU, Gwangju Inst Sci & Technol, Dept Nanobio Mat & Elect, Kwangju 500712, South Korea

来源：

OPTICS LETTERS | 2012年 / 37卷 / 13期

基金：

新加坡国家研究基金会;

关键词：

BROAD-BAND; OPTICS; TECHNOLOGY; DOMAIN;

D O I：

10.1364/OL.37.002742

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A hemispherical surface structure was fabricated on a sapphire substrate by utilizing a self-assembly and spin-coating process for a terahertz (THz) antireflection coating. The self-assembled glass spheres and spin-coated material led to a gradual change in the effective refractive index. The aspect ratio of the hemispherical surface structure was controlled easily by adjusting the thickness of the B-staged bisbenzocyclobutene used as a coating. The reflectance of the fabricated hemispherical surface structure, having a period of 140 mu m, exhibited low reflectance and low Fabry-Perot resonance in a THz spectral range from 0.1 to 1.9 THz. (C) 2012 Optical Society of America

引用

页码：2742 / 2744

页数：3

共 14 条

[1] Broadband antireflective surface-relief structure for THz optics [J].

Brueckner, Claudia ;

Pradarutti, Boris ;

Stenzel, Olaf ;

Steinkopf, Ralf ;

Riehemann, Stefan ;

Notni, Gunther ;

Tuennermann, Andreas .

OPTICS EXPRESS, 2007, 15 (03) :779-789

[2] Tunable broadband antireflection structures for silicon at terahertz frequency [J].

Chen, Y. W. ;

Han, P. Y. ;

Zhang, X. -C. .

APPLIED PHYSICS LETTERS, 2009, 94 (04)

[3] An antireflective silicon grating working in the resonance domain for the near infrared spectral region [J].

Escoubas, L ;

Simon, JJ ;

Loli, M ;

Berginc, G ;

Flory, F ;

Giovannini, H .

OPTICS COMMUNICATIONS, 2003, 226 (1-6) :81-88

[4] Materials for terahertz science and technology [J].

Ferguson, B ;

Zhang, XC .

NATURE MATERIALS, 2002, 1 (01) :26-33

[5] Terahertz time-domain spectroscopy and imaging of artificial RNA [J].

Fischer, BM ;

Hoffmann, M ;

Helm, H ;

Wilk, R ;

Rutz, F ;

Kleine-Ostmann, T ;

Koch, M ;

Jepsen, PU .

OPTICS EXPRESS, 2005, 13 (14) :5205-5215

[6] An anti-reflection coating for silicon optics at terahertz frequencies [J].

Gatesman, AJ ;

Waldman, J ;

Ji, M ;

Musante, C ;

Yngvesson, S .

IEEE MICROWAVE AND GUIDED WAVE LETTERS, 2000, 10 (07) :264-266

[7] Antireflection coating formed by plasma-enhanced chemical-vapor deposition for terahertz-frequency germanium optics [J].

Hosako, I .

APPLIED OPTICS, 2003, 42 (19) :4045-4048

[8] Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures [J].

Huang, Yi-Fan ;

Chattopadhyay, Surojit ;

Jen, Yi-Jun ;

Peng, Cheng-Yu ;

Liu, Tze-An ;

Hsu, Yu-Kuei ;

Pan, Ci-Ling ;

Lo, Hung-Chun ;

Hsu, Chih-Hsun ;

Chang, Yuan-Huei ;

Lee, Chih-Shan ;

Chen, Kuei-Hsien ;

Chen, Li-Chyong .

NATURE NANOTECHNOLOGY, 2007, 2 (12) :770-774

[9] Fabrication of cone-shaped subwavelength structures by utilizing a confined convective self-assembly technique and inductively coupled-plasma reactive-ion etching [J].

Kim, Dae-Seon ;

Park, Min-Su ;

Jang, Jae-Hyung .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2011, 29 (02)

[10] Terahertz transparency at Fabry-Perot resonances of periodic slit arrays in a metal plate: experiment and theory [J].

Lee, J. W. ;

Seo, M. A. ;

Park, D. J. ;

Jeoung, S. C. ;

Park, Q. H. ;

Lienau, Ch. ;

Kim, D. S. .

OPTICS EXPRESS, 2006, 14 (26) :12637-12643

← 1 2 →