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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 12 — Jun. 15, 2013
  • pp: 2156–2158

In-plane focusing of terahertz surface waves on a gradient index metamaterial film

Martin F. Volk, Benjamin Reinhard, Jens Neu, René Beigang, and Marco Rahm  »View Author Affiliations


Optics Letters, Vol. 38, Issue 12, pp. 2156-2158 (2013)
http://dx.doi.org/10.1364/OL.38.002156


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Abstract

We designed and implemented a gradient index metasurface for in-plane focusing of confined terahertz (THz) surface waves. We measured the spatial propagation of the surface waves by two-dimensional mapping of the complex electric field using a THz near-field spectroscope. The surface waves were focused to a diameter of 500 μm after a focal length of approximately 2 mm. In the focus, we measured a field amplitude enhancement of a factor of 3.

© 2013 Optical Society of America

OCIS Codes
(240.6690) Optics at surfaces : Surface waves
(160.3918) Materials : Metamaterials

ToC Category:
Materials

History
Original Manuscript: March 25, 2013
Manuscript Accepted: May 21, 2013
Published: June 14, 2013

Citation
Martin F. Volk, Benjamin Reinhard, Jens Neu, René Beigang, and Marco Rahm, "In-plane focusing of terahertz surface waves on a gradient index metamaterial film," Opt. Lett. 38, 2156-2158 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-12-2156


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