Terahertz pulsed spectroscopic imaging using optimized binary masks

被引：37

作者：

Shen, Y. C. ^{[1
]}

Gan, L. ^{[2
]}

Stringer, M. ^{[3
]}

Burnett, A. ^{[3
]}

Tych, K. ^{[3
]}

Shen, H. ^{[1
]}

Cunningham, J. E. ^{[3
]}

Parrott, E. P. J. ^{[4
]}

Zeitler, J. A. ^{[4
]}

Gladden, L. F. ^{[4
]}

Linfield, E. H. ^{[3
]}

Davies, A. G. ^{[3
]}

机构：

[1] Univ Liverpool, Dept Elect Engn & Elect, Liverpool L69 3GJ, Merseyside, England

[2] Brunel Univ, Sch Engn & Design, Uxbridge UB8 3PH, Middx, England

[3] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England

[4] Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge CB2 3RA, England

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 23期

基金：

英国工程与自然科学研究理事会;

关键词：

VIBRATIONAL-SPECTRA; RADIATION; DRUGS;

D O I：

10.1063/1.3271030

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the development of a terahertz pulsed spectroscopic imaging system based on the concept of compressive sensing. A single-point terahertz detector, together with a set of 40 optimized two-dimensional binary masks, was used to measure the terahertz waveforms transmitted through a sample. Terahertz time- and frequency-domain images of the sample comprising 20 x 20 pixels were subsequently reconstructed. We demonstrate that both the spatial distribution and the spectral characteristics of a sample can be obtained by this means. Compared with conventional terahertz pulsed imaging, no raster scanning of the object is required, and ten times fewer terahertz spectra need be taken. It is therefore ideal for real-time imaging applications. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3271030]

引用

页数：3

共 17 条

[1] On the strong and narrow absorption signature in lactose at 0.53 THz [J].

Brown, E. R. ;

Bjarnason, J. E. ;

Fedor, A. M. ;

Korter, T. M. .

APPLIED PHYSICS LETTERS, 2007, 90 (06)

[2] Robust uncertainty principles:: Exact signal reconstruction from highly incomplete frequency information [J].

Candès, EJ ;

Romberg, J ;

Tao, T .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2006, 52 (02) :489-509

[3] Terahertz imaging with compressed sensing and phase retrieval [J].

Chan, Wai Lam ;

Moravec, Matthew L. ;

Baraniuk, Richard G. ;

Mittleman, Daniel M. .

OPTICS LETTERS, 2008, 33 (09) :974-976

[4] 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)

[5] 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)

[6] Terahertz spectroscopy of explosives and drugs [J].

Davies, A. Giles ;

Burnett, Andrew D. ;

Fan, Wenhui ;

Linfield, Edmund H. ;

Cunningham, John E. .

MATERIALS TODAY, 2008, 11 (03) :18-26

[7] Compressive sampling vs. conventional imaging [J].

Haupt, Jarvis ;

Nowak, Robert .

2006 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, ICIP 2006, PROCEEDINGS, 2006, :1269-+

[8]

Haykin SS., 2008, Adaptive Filter Theory

[9] IMAGING WITH TERAHERTZ WAVES [J].

HU, BB ;

NUSS, MC .

OPTICS LETTERS, 1995, 20 (16) :1716-&

[10] Non-destructive terahertz imaging of illicit drugs using spectral fingerprints [J].

Kawase, K ;

Ogawa, Y ;

Watanabe, Y ;

Inoue, H .

OPTICS EXPRESS, 2003, 11 (20) :2549-2554

← 1 2 →