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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 9 — May. 1, 2013
  • pp: 1464–1466

Evaluation of the shadow effect in terahertz kinoform gratings

Jarosław Suszek, Maciej Sypek, Michał Makowski, Frédéric Garet, Izabela Ducin, Karol Kakarenko, Jarosław Bomba, and Jean-Louis Coutaz  »View Author Affiliations

Optics Letters, Vol. 38, Issue 9, pp. 1464-1466 (2013)

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The experimental and numerical evaluation of the shadow effect in kinoform diffractive gratings for the terahertz (THz) range is given. This effect limits the diffractive efficiency of dense gratings, which are the base of the elements suited for convenient beam focusing and imaging in THz. The observed effect of redirecting most of the incident energy into stray 1st diffractive order is observed and discussed. The presented results show the great significance of the shadow effect in selected kinoform gratings and prove the utility of the used methodology of numerical simulations.

© 2013 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1970) Diffraction and gratings : Diffractive optics
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Diffraction and Gratings

Original Manuscript: February 4, 2013
Revised Manuscript: March 8, 2013
Manuscript Accepted: March 22, 2013
Published: April 26, 2013

Jarosław Suszek, Maciej Sypek, Michał Makowski, Frédéric Garet, Izabela Ducin, Karol Kakarenko, Jarosław Bomba, and Jean-Louis Coutaz, "Evaluation of the shadow effect in terahertz kinoform gratings," Opt. Lett. 38, 1464-1466 (2013)

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