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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 12 — Jun. 15, 2012
  • pp: 2214–2216

Highly efficient broadband double-sided Fresnel lens for THz range

Maciej Sypek, Michał Makowski, Emilie Hérault, Agnieszka Siemion, Andrzej Siemion, Jarosław Suszek, Frédéric Garet, and Jean-Louis Coutaz  »View Author Affiliations

Optics Letters, Vol. 37, Issue 12, pp. 2214-2216 (2012)

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Modern passive THz setups require effective optical elements with a large numerical aperture. Here we propose a new type of the optical element for THz applications, which is a broadband double-sided Fresnel-like lens with an optimized thickness. The optimization is performed to obtain a very low attenuation, low material cost, and small weight in the element media. It also provides achromatic properties for the assumed wavelength range. The experimental evaluation of the proposed diffractive lens by means of time-domain spectroscopy is presented and discussed.

© 2012 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(230.3120) Optical devices : Integrated optics devices
(300.6495) Spectroscopy : Spectroscopy, teraherz
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Optical Devices

Original Manuscript: March 23, 2012
Revised Manuscript: April 27, 2012
Manuscript Accepted: April 27, 2012
Published: June 4, 2012

Maciej Sypek, Michał Makowski, Emilie Hérault, Agnieszka Siemion, Andrzej Siemion, Jarosław Suszek, Frédéric Garet, and Jean-Louis Coutaz, "Highly efficient broadband double-sided Fresnel lens for THz range," Opt. Lett. 37, 2214-2216 (2012)

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