SPECTRAL-TEMPORAL EVOLUTION OF THE ELECTRICAL FIELD OF TERAHERTZ PULSE BY FRAUNHOFER SLIT DIFFRACTION

Maxim Kulya, Yaroslav Grachyov, Andrei Gorodetsky, Bespalov Viktor G

2011 , VOLUME 11, NUMBER 6 ( NOVEMBER-DECEMBER )

ISSN 2226-1494 (print), ISSN 2500-0373 (online)

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Vladimir O.
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SPECTRAL-TEMPORAL EVOLUTION OF THE ELECTRICAL FIELD OF TERAHERTZ PULSE BY FRAUNHOFER SLIT DIFFRACTION

, Y. Grachyov, A. Gorodetsky, V. G. Bespalov

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Abstract

Time dependencies of the electric field amplitude for terahertz electromagnetic pulse of a few oscillations for various angles of slit diffraction in the far field are theoretically and experimentally obtained. Significant changes in a temporary form of the electric field of pulse with the increasing of diffraction angle have been revealed, as well as corresponding changes in the spectrum. Comparison of the findings shows a good agreement of calculations and experimental results. Obtained outcomes can be used in pulse terahertz optics and spectroscopy.

Keywords: pulse optics from a few oscillations of the electric field, pulse terahertz radiation, slit diffraction.

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