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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 17 — Sep. 1, 2011
  • pp: 3476–3478

Polarization insensitive, broadband terahertz metamaterial absorber

James Grant, Yong Ma, Shimul Saha, Ata Khalid, and David R. S. Cumming  »View Author Affiliations


Optics Letters, Vol. 36, Issue 17, pp. 3476-3478 (2011)
http://dx.doi.org/10.1364/OL.36.003476


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Abstract

We present the simulation, implementation, and measurement of a polarization insensitive broadband resonant terahertz metamaterial absorber. By stacking metal-insulator layers with differing structural dimensions, three closely positioned resonant peaks are merged into one broadband absorption spectrum. Greater than 60% absorption is obtained across a frequency range of 1.86 THz where the central resonance frequency is 5 THz . The FWHM of the device is 48%, which is two and half times greater than the FWHM of a single layer structure. Such metamaterials are promising candidates as absorbing elements for bolometric terahertz imaging.

© 2011 Optical Society of America

OCIS Codes
(040.2235) Detectors : Far infrared or terahertz
(160.3918) Materials : Metamaterials
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Materials

History
Original Manuscript: May 5, 2011
Revised Manuscript: August 1, 2011
Manuscript Accepted: August 15, 2011
Published: August 31, 2011

Citation
James Grant, Yong Ma, Shimul Saha, Ata Khalid, and David R. S. Cumming, "Polarization insensitive, broadband terahertz metamaterial absorber," Opt. Lett. 36, 3476-3478 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-17-3476

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