RADIATION-PATTERNS FROM LENS-COUPLED TERAHERTZ ANTENNAS

Peter Uhd Jepsen, S. R. Keiding

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We report on investigations of the angular distribution of the radiation emitted from a terahertz antenna system equipped with a truncated spherical silicon lens. The pattern is calculated by wide-angle interference principles and Huygens-Fresnel diffraction theory. Experimental determination of the radiation pattern is performed by spatially resolved terahertz time-domain spectroscopy. Good agreement between theory and experiment is obtained, and we find that the terahertz beam can be represented by a Gaussian beam emitted from a circular aperture equal to the diameter of the lens.
Original languageEnglish
JournalOptics Letters
Volume20
Issue number8
Pages (from-to)807-809
Number of pages3
ISSN0146-9592
DOIs
Publication statusPublished - 15 Apr 1995
Externally publishedYes

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