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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1230–1232

Thermal tunability in terahertz metamaterials fabricated on strontium titanate single-crystal substrates

Ranjan Singh, Abul K. Azad, Q. X. Jia, Antoinette J. Taylor, and Hou-Tong Chen  »View Author Affiliations


Optics Letters, Vol. 36, Issue 7, pp. 1230-1232 (2011)
http://dx.doi.org/10.1364/OL.36.001230


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Abstract

We report an experimental demonstration of thermal tuning of resonance frequency in a planar terahertz metamaterial consisting of a gold split-ring resonator array fabricated on a bulk single-crystal strontium titanate ( SrTiO 3 ) substrate. Cooling the metamaterial starting from 409 K down to 150 K causes about a 43% shift in resonance frequency, and there is very little variation in resonance strength. The resonance shift is due to the temperature- dependent dielectric constant of the strontium titanate. The experiment opens up avenues for designing tunable terahertz devices by exploiting the temperature-sensitive characteristic of high dielectric constant substrates and complex metal oxide materials.

© 2011 Optical Society of America

OCIS Codes
(260.5740) Physical optics : Resonance
(160.3918) Materials : Metamaterials
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Spectroscopy

History
Original Manuscript: February 9, 2011
Revised Manuscript: February 28, 2011
Manuscript Accepted: February 28, 2011
Published: March 29, 2011

Citation
Ranjan Singh, Abul K. Azad, Q. X. Jia, Antoinette J. Taylor, and Hou-Tong Chen, "Thermal tunability in terahertz metamaterials fabricated on strontium titanate single-crystal substrates," Opt. Lett. 36, 1230-1232 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1230

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