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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 2 — Jan. 17, 2011
  • pp: 1072–1080

Planar terahertz waveguides based on complementary split ring resonators

Gagan Kumar, Albert Cui, Shashank Pandey, and Ajay Nahata  »View Author Affiliations


Optics Express, Vol. 19, Issue 2, pp. 1072-1080 (2011)
http://dx.doi.org/10.1364/OE.19.001072


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Abstract

We experimentally demonstrate planar plasmonic THz waveguides using metal films that are periodically perforated with complementary split ring resonators (CSRRs). The waveguide transmission spectra exhibit numerous transmission resonances. While the geometry is commonly used in developing negative index materials, the excitation geometry used here does not allow for conventional metamaterial response. Instead, we show that all of the observed resonances can be determined from the geometrical properties of the CSRR apertures. Surprisingly, the Bragg condition does not appear to limit the frequency extent of the observed resonances. The results suggest that metamaterial-inspired geometries may be useful for developing THz guided-wave devices.

© 2011 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(240.6690) Optics at surfaces : Surface waves
(260.3090) Physical optics : Infrared, far
(160.1245) Materials : Artificially engineered materials
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Metamaterials

History
Original Manuscript: October 26, 2010
Revised Manuscript: December 20, 2010
Manuscript Accepted: January 5, 2011
Published: January 10, 2011

Citation
Gagan Kumar, Albert Cui, Shashank Pandey, and Ajay Nahata, "Planar terahertz waveguides based on complementary split ring resonators," Opt. Express 19, 1072-1080 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-2-1072


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