Terahertz imaging of objects in powders

被引：27

作者：

Herrmann, M ^{[1
]}

Tani, M ^{[1
]}

Watanabe, M ^{[1
]}

Sakai, K ^{[1
]}

机构：

[1] Kansai Adv Res Ctr, Commun Res Lab, Nishi Ku, Kobe, Hyogo 6512492, Japan

来源：

IEE PROCEEDINGS-OPTOELECTRONICS | 2002年 / 149卷 / 03期

关键词：

D O I：

10.1049/ip-opt:20020185

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The use of terahertz radiation for detecting and imaging objects hidden in powders is demonstrated. Glass, eggshell and various plastics have been imaged in powders such as wheat flour, tale and sugar. The method may have applications in quality control. The images have been compiled by making use of various features of the terahertz; time-domain waveforms. Details arising from refraction and interference close to the resolution limit are discussed. A simple method is suggested for distinguishing between objects of different materials even if their thickness is unknown. The potential of THz radiation for measuring the local density profile of powders is also demonstrated.

引用

页码：116 / 120

页数：5

共 9 条

[1] Display modes in time-resolved terahertz imaging [J].

Herrmann, M ;

Tani, M ;

Sakai, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2000, 39 (11) :6254-6258

[2] IMAGING WITH TERAHERTZ WAVES [J].

HU, BB ;

NUSS, MC .

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

[3] Subpicosecond imaging system based on electrooptic effect [J].

JacobsPerkins, D ;

Currie, M ;

Wang, CC ;

Williams, CA ;

Donaldson, WR ;

Sobolewski, R ;

Hsiang, TY .

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 1996, 2 (03) :729-738

[4] Short-range interference effect in the diffusion of light in random media [J].

Kawato, S ;

Hattori, T ;

Takemori, T ;

Nakatsuka, H .

PHYSICAL REVIEW B, 1998, 58 (10) :6180-6193

[5] DENSITY RELAXATION IN A VIBRATED GRANULAR MATERIAL [J].

KNIGHT, JB ;

FANDRICH, CG ;

LAU, CN ;

JAEGER, HM ;

NAGEL, SR .

PHYSICAL REVIEW E, 1995, 51 (05) :3957-3963

[6]

LU ZG, P SPIE INT SOC OPT E, V3491, P334

[7] T-ray imaging [J].

Mittleman, DM ;

Jacobsen, RH ;

Nuss, MC .

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 1996, 2 (03) :679-692

[8] Recent advances in terahertz imaging [J].

Mittleman, DM ;

Gupta, M ;

Neelamani, R ;

Baraniuk, RG ;

Rudd, JV ;

Koch, M .

APPLIED PHYSICS B-LASERS AND OPTICS, 1999, 68 (06) :1085-1094

[9] Two-dimensional electro-optic imaging of THz beams [J].

Wu, Q ;

Hewitt, TD ;

Zhang, XC .

APPLIED PHYSICS LETTERS, 1996, 69 (08) :1026-1028

← 1 →