Title :
Generation and detection of ultrabroadband Terahertz radiation with photoconductive antennas
Author :
Tani, M. ; Kono, Susumu ; Nakajima, M. ; Iida, M. ; Sakai, K.
Author_Institution :
Res. Centerfor Supercond. Photonics, Osaka Univ., Japan
Abstract :
We report the generation and detection of ultrabroadband THz radiation using photoconductive antennas as the emitter and the detector. The photoconductive antenna showed a detection bandwidth as broad as the electro-optic sampling detectors. On the other hand, the photoconductive emitter showed a spectral bandwidth much narrower than that of the electro-optic emitters. We discuss the bandwidth properties of the photoconductive emitters and detectors in comparison with their electro-optic counterparts.
Keywords :
broadband antennas; electro-optical devices; infrared detectors; infrared sources; photoconducting devices; submillimetre wave antennas; submillimetre wave detectors; submillimetre wave generation; submillimetre wave measurement; GaAs; THz radiation detectors; THz radiation emitters; ZnTe; detection bandwidth; electro-optic emitters; electro-optic sampling detectors; photoconductive antennas; photoconductive emitters; spectral bandwidth; spectral distribution; ultrabroadband THz radiation generation/detection; Antenna measurements; Bandwidth; Charge carrier lifetime; Dipole antennas; Optical pulse generation; Photoconductivity; Pump lasers; Radiation detectors; Substrates; Zinc compounds;
Conference_Titel :
Infrared and Millimeter Waves, 2002. Conference Digest. Twenty Seventh International Conference on
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-7423-1
DOI :
10.1109/ICIMW.2002.1076116
