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THz time-domain spectroscopy of nonpolar liquids

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2 Author(s)
Pedersen, J.E. ; Fysisk Inst., Odense Univ., Denmark ; Keiding, S.R.

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

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Quantum Electronics, IEEE Journal of  (Volume:28 ,  Issue: 10 )