Title :
Broadband terahertz time-domain spectroscopic system with photoconductive antennas
Author :
Saito, S. ; Syouji, A. ; Sakai, K.
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Kobe
Abstract :
Terahertz time-domain spectroscopy (THz-TDS) has many advantages over the traditional spectroscopies. Nevertheless it has been said that its spectral coverage is limited less tha several THz. In order to extend this limitation to higher frequencies, we have developed a broadband THz-TDS system. The system consists of a mode-locked Ti: Sapphire ultra short pulse laser as an excitation light source and photoconductive antennas as terahertz radiation emitter and detector. It is enclosed in a vacuum-tight box, which is purged with nitrogen gas and has a revolving sample stage and it can be controlled automatically. A frequency region of 0.1-15 THz is covered by this system.
Keywords :
antennas; photoconducting materials; submillimetre wave spectroscopy; submillimetre waves; Ti:Sapphire ultra short pulse laser; broadband terahertz time-domain spectroscopic system; excitation light source; photoconductive antennas; terahertz radiation detector; terahertz radiation emitter; terahertz time-domain spectroscopy; Broadband antennas; Frequency; Gas lasers; Laser excitation; Laser mode locking; Light sources; Optical pulses; Photoconductivity; Spectroscopy; Time domain analysis;
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.2007.4516592
