Title :
Quasi-near field terahertz time domain spectroscopy
Author :
Chakkittakandy, Reshmi ; Planken, Paul C M
Author_Institution :
Fac. of Appl. Sci., Delft Univ. of Technol., Delft
Abstract :
We present a simple experimental set-up to generate and detect terahertz (THz) radiation with a large bandwidth of 7.5 THz. We show that by keeping the generation and detection crystals close to each other, a high signal-to-noise ratio (SNR) can be achieved without using lock-in detection and dry nitrogen flushing. Using this set-up we have measured the absorption lines in D-tartaric acid from 0.5 THz up to 7 THz.
Keywords :
submillimetre wave detectors; submillimetre wave generation; submillimetre wave spectra; submillimetre wave spectroscopy; D-tartaric acid; absorption lines; bandwidth 7.5 THz; frequency 0.5 THz to 7 THz; quasinear field spectroscopy; signal-to-noise ratio; terahertz radiation detection; terahertz radiation generation; terahertz spectroscopy; time domain spectroscopy; Absorption; Crystals; Optical pulse generation; Optical pulses; Optical pumping; Optical surface waves; Probes; Radiation detectors; Spectroscopy; Ultrafast optics;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2119-0
Electronic_ISBN :
978-1-4244-2120-6
DOI :
10.1109/ICIMW.2008.4665593
