Electromagnetic behavior of spatial terahertz wave modulators based on reconfigurable micromirror gratings in Littrow configuration

被引：8

作者：

Kappa, Jan ^{[1
,2
]}

Schmitt, Klemens M. ^{[1
,2
]}

Rahm, Marco ^{[1
,2
]}

机构：

[1] Tech Univ Kaiserslautern, Dept Elect & Comp Engn, Kaiserslautern, Germany

[2] Tech Univ Kaiserslautern, Res Ctr OPTIMAS, Kaiserslautern, Germany

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 17期

关键词：

DIFFRACTION GRATINGS; LIGHT-MODULATOR; SPECTROSCOPY; ARRAYS;

D O I：

10.1364/OE.25.020850

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Efficient, high speed spatial modulators with predictable performance are a key element in any coded aperture terahertz imaging system. For spectroscopy, the modulators must also provide a broad modulation frequency range. In this study, we numerically analyze the electromagnetic behavior of a dynamically reconfigurable spatial terahertz wave modulator based on a micromirror grating in Littrow configuration. We show that such a modulator can modulate terahertz radiation over a wide frequency range from 1.7 THz to beyond 3 THz at a modulation depth of more than 0.6. As a specific example, we numerically simulated coded aperture imaging of an object with binary transmissive properties and successfully reconstructed the image. (C) 2017 Optical Society of America

引用

页码：20850 / 20859

页数：10

共 24 条

[1] Optically controlled terahertz beam steering and imaging [J].

Busch, Stefan ;

Scherger, Benedikt ;

Scheller, Maik ;

Koch, Martin .

OPTICS LETTERS, 2012, 37 (08) :1391-1393

[2] Large micromirror array for multi-object spectroscopy in cryogenic environment [J].

Canonica, Michael ;

Waldis, Severin ;

Zamkotsian, Frederic ;

Lanzoni, Patrick ;

Clerc, Pierre-Andre ;

Noell, Wilfried ;

de Rooij, Nico .

MOEMS AND MINIATURIZED SYSTEMS VIII, 2009, 7208

[3] On the intensity distribution function of blazed reflective diffraction gratings [J].

Casini, R. ;

Nelson, P. G. .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2014, 31 (10) :2179-2184

[4] Imaging with terahertz radiation [J].

Chan, Wai Lam ;

Deibel, Jason ;

Mittleman, Daniel M. .

REPORTS ON PROGRESS IN PHYSICS, 2007, 70 (08) :1325-1379

[5] A spatial light modulator for terahertz beams [J].

Chan, Wai Lam ;

Chen, Hou-Tong ;

Taylor, Antoinette J. ;

Brener, Igal ;

Cich, Michael J. ;

Mittleman, Daniel M. .

APPLIED PHYSICS LETTERS, 2009, 94 (21)

[6] A single-pixel terahertz imaging system based on compressed sensing [J].

Chan, Wai Lam ;

Charan, Kriti ;

Takhar, Dharmpal ;

Kelly, Kevin F. ;

Baraniuk, Richard G. ;

Mittleman, Daniel M. .

APPLIED PHYSICS LETTERS, 2008, 93 (12)

[7] Bolometric detection of terahertz quantum cascade laser radiation with graphene-plasmonic antenna arrays [J].

Degl'Innocenti, Riccardo ;

Xiao, Long ;

Kindness, Stephen J. ;

Kamboj, Varun S. ;

Wei, Binbin ;

Braeuninger-Weimer, Philipp ;

Nakanishi, Kenichi ;

Aria, Adrianus I. ;

Hofmann, Stephan ;

Beere, Harvey E. ;

Ritchie, David A. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2017, 50 (17)

[8] THz imaging and sensing for security applications - explosives, weapons and drugs [J].

Federici, JF ;

Schulkin, B ;

Huang, F ;

Gary, D ;

Barat, R ;

Oliveira, F ;

Zimdars, D .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2005, 20 (07) :S266-S280

[9] Terahertz spectroscopy and imaging - Modern techniques and applications [J].

Jepsen, Peter Uhd ;

Cooke, David G. ;

Koch, Martin .

LASER & PHOTONICS REVIEWS, 2011, 5 (01) :124-166

[10] Coded-Aperture Imaging Using Photo-Induced Reconfigurable Aperture Arrays for Mapping Terahertz Beams [J].

Kannegulla, A. ;

Jiang, Z. ;

Rahman, S. M. ;

Shams, M. I. B. ;

Fay, P. ;

Xing, H. G. ;

Cheng, L. -J. ;

Liu, L. .

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2014, 4 (03) :321-327

← 1 2 3 →