High-resolution terahertz reflective imaging and image restoration

被引：47
作者：
Ding, Sheng-Hui [1 ]
Li, Qi [1 ]
Yao, Rui [1 ]
Wang, Qi [1 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Tunable Laser Technol, Harbin 150080, Peoples R China
来源：
APPLIED OPTICS | 2010年 / 49卷 / 36期
关键词：
D O I：
10.1364/AO.49.006834
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a high-resolution terahertz (THz) reflective imaging system, operating at 2: 52 THz, that employs a continuous-wave THz gas laser and a pyroelectric detector. The spatial resolution was evaluated from the system's modulation transfer function and tested by scanning a series of resolution targets. To further improve the image quality, Lucy-Richardson method was adopted to restore the scanning result. With the scanning spot profile measured using knife edge method, a satisfying restoration result can be obtained. Finally, the system's performance was observed by imaging some different test objects. (C) 2010 Optical Society of America
引用
收藏
页码：6834 / 6839
页数：6
相关论文
共 21 条
[1]   Broadband terahertz imaging of documents written with lead pencils [J].
Abraham, E. ;
Younus, A. ;
El Fatimy, A. ;
Delagnes, J. C. ;
Nguema, E. ;
Mounaix, P. .
OPTICS COMMUNICATIONS, 2009, 282 (15) :3104-3107
[2]   Acceleration of iterative image restoration algorithms [J].
Biggs, DSC ;
Andrews, M .
APPLIED OPTICS, 1997, 36 (08) :1766-1775
[3]   Diffuse reflection imaging at terahertz frequencies for security applications - art. no. 67410R [J].
Dean, P. ;
Khanna, S. ;
Chakraborty, S. ;
Lachab, M. ;
Davies, A. G. ;
Linfield, E. H. .
OPTICS AND PHOTONICS FOR COUNTERTERRORISM AND CRIME FIGHTING III, 2007, 6741 :R7410-R7410
[4]   IMAGING WITH TERAHERTZ WAVES [J].
HU, BB ;
NUSS, MC .
OPTICS LETTERS, 1995, 20 (16) :1716-&
[5]   Improved sample characterization in terahertz reflection imaging and spectroscopy [J].
Huang, Shengyang ;
Ashworth, Philip C. ;
Kan, Kanis W. C. ;
Chen, Yang ;
Wallace, Vincent P. ;
Zhang, Yuan-ting ;
Pickwell-MacPherson, Emma .
OPTICS EXPRESS, 2009, 17 (05) :3848-3854
[6]   Terahertz imaging: applications and perspectives [J].
Jansen, Christian ;
Wietzke, Steffen ;
Peters, Ole ;
Scheller, Maik ;
Vieweg, Nico ;
Salhi, Mohammed ;
Krumbholz, Norman ;
Joerdens, Christian ;
Hochrein, Thomas ;
Koch, Martin .
APPLIED OPTICS, 2010, 49 (19) :E48-E57
[7]  
Li Q., 2009, P SPIE, V7277
[8]   Continuous-wave terahertz scanning image resolution analysis and restoration [J].
Li, Qi ;
Yin, Qiguo ;
Yao, Rui ;
Ding, Shenghui ;
Wang, Qi .
OPTICAL ENGINEERING, 2010, 49 (03)
[9]   Super-resolution reconstruction of terahertz images - art. no. 69490J [J].
Li, Yue ;
Li, Li ;
Hellicar, Andrew ;
Guo, Y. Jay .
TERAHERTZ FOR MILITARY AND SECURITY APPLICATIONS IV, 2008, 6949 :J9490-J9490
[10]   Continuous-wave terahertz imaging with a hybrid system [J].
Loeffler, Torsten ;
May, Thilo ;
am Weg, Christian ;
Alcin, Ali ;
Hils, Bernd ;
Roskos, Hartmut G. .
APPLIED PHYSICS LETTERS, 2007, 90 (09)
123