Title :
Role of low-temperature-grown GaAs substrate of photoconductive antenna in broadband terahertz time domain spectroscopy
Author :
Shimosato, H. ; Katayama, I. ; Saito, S. ; Ashida, M. ; Itoh, T. ; Kadoya, Y. ; Sakai, K.
Author_Institution :
Grad. Sch. of Eng. Sci., Osaka Univ., Toyonaka
Abstract :
We have investigated the detection performance of photoconductive antennas fabricated on low-temperature-grown GaAs substrate. We compared terahertz waves detected with antennas annealed at different temperatures in terahertz time domain spectroscopy. The signal detected with the antenna annealed at higher temperature showed stronger intensity. On the other hand, the spectrum detected with the antenna annealed at lower temperature showed broader bandwidth.
Keywords :
dipole antennas; photoconducting devices; semiconductor growth; submillimetre wave antennas; submillimetre wave spectroscopy; GaAs; broadband terahertz time domain spectroscopy; photoconductive antenna; Annealing; Bandwidth; Broadband antennas; Detectors; Dipole antennas; Gallium arsenide; Photoconductivity; Spectroscopy; Substrates; Temperature; Annealing; Dipole antennas; Infrared spectroscopy; Semiconductor growth;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516593
