Title :
Sub-THz transmission spectroscopy in liquids using a stand-alone compact unit
Author :
Cho, G.C. ; Tani, M. ; Wegener, J. ; Zhang, X.-C.
Author_Institution :
Dept. of Phys., Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
We present a compact THz measurement system in a portable size integrated with a femtosecond fiber laser. We demonstrate the feasibility of application of this portable and stand-alone unit for spectral characterization of chemicals. We have performed experiments in liquid chemicals. Especially, we found unique feature of transmission properties of isopropanol in the frequency range of sub-THz. Furthermore, in a whisky sample we observe an overall transmission rate of 20 % for sub-THz pulse through a cell with a thickness of 1 mm which contains 60 % of liquid water
Keywords :
organic compounds; spectrochemical analysis; submillimetre wave measurement; submillimetre wave spectra; 1 mm; cell; femtosecond fiber laser; isopropanol; liquid chemicals; liquids; portable size; spectral characterization; stand-alone compact unit; sub-THz pulse; sub-THz transmission spectroscopy; transmission properties; transmission rate; whisky sample; Acoustic beams; Chemicals; Fiber lasers; Laser beams; Liquids; Optical pulse generation; Optical pulses; Pulse measurements; Spectroscopy; Ultrafast optics;
Conference_Titel :
LEOS '99. IEEE Lasers and Electro-Optics Society 1999 12th Annual Meeting
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5634-9
DOI :
10.1109/LEOS.1999.811858
