, Volume 48, Issue 10-11, pp 837-843

Generation and detection of ultrashort pulses of electromagnetic field in the terahertz range and their application for spectroscopy

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We present experimental results on generation of pulsed terahertz radiation in a ZnTe crystal using nonlinear optical rectification of high-power femtosecond laser pulses. The use of terahertz pulses for spectroscopy is tested in the rotational lines of absorption of water vapors in the atmosphere. Panoramic spectra of absorption of a number of solvents and protein solutions are measured in the range from 0.2 to 2 THz.

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 48, No. 10–11, pp. 939–946, October–November 2005.