Title :
Multichannel continuous-wave terahertz imaging
Author :
Gregory, I.S. ; Tribe, W.R. ; Spencer, L. ; Wallace, V.P.
Author_Institution :
TeraView Ltd., Cambridge, UK
Abstract :
We demonstrate an all-optoelectronic, continuous-wave (CW) terahertz spectroscopy and imaging system based on temperature-tunable diode lasers. Time-domain waveforms are acquired for each pixel, and the use of multiple frequencies enables spectroscopic image display modes. We discuss the separation of the amplitude and phase parameters, and compare the accessible information with that obtained using pulsed terahertz systems.
Keywords :
infrared spectroscopy; measurement by laser beam; microwave photonics; semiconductor lasers; time-domain analysis; waveform analysis; continuous-wave terahertz imaging; continuous-wave terahertz spectroscopy; display modes; multichannel imaging; pulsed terahertz systems; spectroscopic image; temperature-tunable diode lasers; time-domain waveforms; Diode lasers; Frequency; Optical imaging; Optical pulses; Optical receivers; Phase detection; Photoconductivity; Pixel; Spectroscopy; Ultrafast optics;
Conference_Titel :
Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on
Print_ISBN :
0-7803-9348-1
DOI :
10.1109/ICIMW.2005.1572399
