Recent advance of CO2-pumped THz imaging

LI Qi; YAO Rui; YIN Qi-guo; SHAN Ji-xin; WANG Qi

In order to study the characteristics and the future development direction of terahertz two-dimension imaging methods based on CO2 laser-pumped far-infrared laser source, the basic principle of CO2 laser-pumped far-infrared laser source and two typical lasers,SIFIR-50FPL and FIRL100 made in USA and England respectively, were introduced.Then the domestic and international research results of imaging in recent years and their imaging characteristics were discussed.Finally it was concluded that the long-distance three-dimension image THz radar, the real-time imaging focal plane array (FPA) detection and the real-time image processing and automatic target recognition system were the development trends of the research of CO2 laserpumped terahertz imaging.

1. National Key Laboratory of Tunable Laser Technology, Institute of Optic-Electronic, Harbin Institute of Technology, Harbin 150001, China

Received Date: 2008-03-14

Accepted Date: 2008-06-19

Available Online: 2009-04-25

Abstract: In order to study the characteristics and the future development direction of terahertz two-dimension imaging methods based on CO2 laser-pumped far-infrared laser source, the basic principle of CO2 laser-pumped far-infrared laser source and two typical lasers,SIFIR-50FPL and FIRL100 made in USA and England respectively, were introduced.Then the domestic and international research results of imaging in recent years and their imaging characteristics were discussed.Finally it was concluded that the long-distance three-dimension image THz radar, the real-time imaging focal plane array (FPA) detection and the real-time image processing and automatic target recognition system were the development trends of the research of CO2 laserpumped terahertz imaging.

HTML

Reference (17)

[1]	SCHADE U,HOLLDACK K,KUSKE P,et al.THz near-field imaging employing synchrotron radiation[J].A P L,2004,84(8):1422-1424.
[2]	PRADARUTTI B,RIEHEMANN S,NOTNI G,et al.Terahertz imaging for styrofoam inspection[J].SPIE,2007,6772:67720P1-67720P5.
[3]	ZIMDARS D,WHITE J,STUK G,et al.Time domain terahertz detection of concealed threats in luggage and personnel[J].SPIE,2006,6212:62120O1-62120O5.
[4]	ZHONG H,KARPOWICZ N,PARTRIDGE J,et al.Terahertz wave imaging for landmine detection[J].SPIE,2004,5411:33-44.
[5]	CHERKASSKY V S,KNYAZEV B A,KUBAREV V V,et al.Imaging techniques for a high-power THz free electron laser[J].Nuclear instruments and Methods in Physics Research,2005,A543(1):102-109.
[6]	FEDERICI J F,SCHULKIN B,HUANG F,et al.THz imaging and sensing for security applications-explosive,weapons,and drugs[J].Semiconductor Science and Technology,2005,20(7):S266-S280.
[7]	WANG Q,CHI X,LI Q.Imaging theory and development of THz free electron lasers[J].Laser Technology,2006,30(6):643-646(in Chinese).
[8]	ZHANG Zh W,CUI W L,ZHANG Y,et al.Terahertz time-domain spectroscopy imaging[J].Journal of Infrared and Millimeter Waves,2006,25(3):217-22(in Chinese).
[9]	PLANKEN P C M,BAKKER H J.Towards time-resolved THz imaging[J].Appl Phys,2004,A78(4):465-469.
[10]	FU E Sh,WANG Zh Zh,SHI P Sh.CW CH3OH far infrared lasers[J].Acta Optica Sinica,1982,2(1):9-17(in Chinese).
[11]	SALHI M,KOCH M.Semi-confocal imaging with a THz gas laser[J].SPIE,2006,6194:61940A/1-61940A/8.
[12]	SIEGEL P H,DENGLER R J.Terahertz heterodyne imager for biomedical applications[J].SPIE,2004,5354:1-9.
[13]	DICKINSON J C,GOYEETTE T M,GATESMAN A J,et al.Teraherz imaging of subjects with concealed weapons[J].SPIE,2006,6212:62120Q/1-62120Q/12.
[14]	LEE A W,HU Q.Real-time,continuous-wave terahertz imaging by use of a microbolometer focal-plane array[J].Opt Lett,2005,30(19):2563-2565.
[15]	ZHANG C H,WANG Y Y,CHEN J,et al.Continuous-wave terahertz imaging system based on far-infrared laser source[C]//Conference Digest of the 2006 Joint 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics.Shanghai:IEEE,2006:426.
[16]	ZHANG C H,WANG Y Y,GAI B,et al.Continuous-wave THz imaging system based on far-infrared laser source[J].Superconductivity,2007,35(3):245-247(in Chinese).
[17]	ZHANG M,RUAN Sh Ch,YANG J,et al.The software design of THz imaging system[J].Microcomputer Information,2007,23(31):25-27(in Chinese).

Recent advance of CO2-pumped THz imaging

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views