Title :
1 kHz terahertz imaging
Author :
Rungsawang, R. ; Mochiduki, A. ; Okuma, S. ; Hattori, T.
Author_Institution :
Inst. of Appl. Phys., Tsukuba Univ., Japan
fDate :
27 Sept.-1 Oct. 2004
Abstract :
We have succeeded in acquiring terahertz (THz) images at a frame rate of 1 kHz. We use intense THz pulses emitted at a repetition rate of 1 kHz from a large-aperture photoconductive antenna, and THz images were obtained at the same rate using a high-speed CCD camera. THz field images were obtained by adopting a phase-sensitive detection method. The delay time of the probe pulse of the electro-optic (EO) detection was fixed at the time when the temporal change in the THz field was steepest.
Keywords :
CCD image sensors; aperture antennas; photoconducting devices; submillimetre wave antennas; submillimetre wave imaging; 1 kHz; THz field images; electro-optic detection; high speed CCD camera; large aperture photoconductive antenna; phase sensitive detection method; probe pulse delay time; terahertz imaging; Charge coupled devices; Charge-coupled image sensors; Delay effects; Frequency; Monitoring; Optical imaging; Optical pulses; Photoconductivity; Sampling methods; Ultrafast optics;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422226
