THz time-domain spectroscopy of nonpolar liquids

Author

Pedersen, J.E. ; Keiding, S.R.

Author_Institution

Fysisk Inst., Odense Univ., Denmark

Volume

28

Issue

10

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

2518

Lastpage

2522

Abstract

A newly developed terahertz time-domain spectrometer based on photoconductive dipole antennas driven by femtosecond laser pulses was used to measure the absorption and index of refraction for benzene, carbon tetrachloride, and cyclohexane in the far infrared. The spectra cover the region of 3-66 cm^-1, where the dielectric response of the nonpolar liquids is dominated by collision induced dipole moments. With terahertz time-domain spectroscopy, information on both the real and imaginary part of the frequency response is obtained in a range difficult to access by standard techniques

Keywords

infrared spectra of organic molecules and substances; infrared spectroscopy; organic compounds; refractive index; submillimetre wave devices; 3 to 66 cm^-1; FIR; THz time-domain spectroscopy; absorption; benzene; carbon tetrachloride; collision induced dipole moments; cyclohexane; dielectric response; far infrared; femtosecond laser pulses; frequency response; index of refraction; nonpolar liquids; photoconductive dipole antennas; terahertz time-domain spectrometer; Antenna measurements; Dielectric measurements; Dipole antennas; Liquids; Optical pulses; Photoconductivity; Pulse measurements; Spectroscopy; Submillimeter wave measurements; Time domain analysis;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.159558

Filename

159558