Title :
Broadband terahertz sources
Author :
Davies, A.G. ; Linfield, E.H. ; Shen, Y.-C. ; Upadhya, P.C.
Author_Institution :
Sch. of Electron. & Electr. Eng., Leeds Univ., UK
Abstract :
This paper discusses the development of an ultra-broadband terahertz (THz) spectrometer with bandwidth > 20 THz, which significantly extends the capability of the THz pulsed imaging technique. This study also shows how time-partitioned Fourier transforms of the measured THz time-domain signal after transmission through a sample allows the progressive observation of absorption and subsequent emission of THz radiation at the frequency of the vibrational mode.
Keywords :
Fourier transform spectra; infrared sources; infrared spectrometers; spectroscopic light sources; submillimetre wave generation; vibrational modes; THz pulsed imaging; THz radiation absorption; THz radiation emission; THz time-domain signal; broadband sources; terahertz sources; terahertz spectrometer; time-partitioned Fourier transforms; vibrational mode; Absorption; Bandwidth; Frequency measurement; Gallium arsenide; Optical imaging; Photoconductivity; Pulse generation; Spectroscopy; Ultrafast electronics; Vibration measurement;
Conference_Titel :
Lasers and Electro-Optics Society, 2005. LEOS 2005. The 18th Annual Meeting of the IEEE
Print_ISBN :
0-7803-9217-5
DOI :
10.1109/LEOS.2005.1547932
