Title :
Coherent generation and detection of continuous THz waves using two photomixers driven by laser diodes
Author :
Mendis, R. ; Sydlo, C. ; Sigmund, J. ; Feiginov, M. ; Meissner, P. ; Hartnagel, H.L.
Author_Institution :
Inst. fur Hochfrequenztechnik., Technische Univ. Darmstadt, Germany
fDate :
27 Sept.-1 Oct. 2004
Abstract :
We report on a completely coherent, tunable, continuous-wave THz system, where for the first-time, both the transmitter and receiver are log-periodic-antenna coupled LTG-GaAs-based finger-photomixers. This compact room-temperature system exhibits signal-to-noise ratios (>103) comparable to or better than what is reported in the literature, and has potential applications in high-resolution-spectroscopy and imaging.
Keywords :
III-V semiconductors; gallium arsenide; integrated optoelectronics; log periodic antennas; semiconductor lasers; submillimetre wave detectors; submillimetre wave generation; submillimetre wave imaging; submillimetre wave mixers; 293 to 298 K; GaAs; coherent THz waves detection; coherent THz waves generation; continuous THz waves; high resolution imaging; high resolution spectroscopy; laser diodes; log periodic antenna coupled mixers; low temperature grown GaAs; photomixers; receiver; room temperature system; signal-noise ratios; transmitter; tunable THz system; Current measurement; Diode lasers; Frequency; Laser excitation; Mirrors; Optical modulation; Optical pumping; Photoconductivity; RAKE receivers; Tunable circuits and devices;
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.2004.1422024
