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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 24 — Dec. 15, 2013
  • pp: 5393–5396

Extraordinary optical absorption based on guided-mode resonance

Wenchao Zhou, Yihui Wu, Muxin Yu, Peng Hao, Guigen Liu, and Kaiwei Li  »View Author Affiliations


Optics Letters, Vol. 38, Issue 24, pp. 5393-5396 (2013)
http://dx.doi.org/10.1364/OL.38.005393


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Abstract

We propose a novel structure that can achieve extraordinary optical absorption over the visible spectrum, based on the guided-mode resonance effect. An optical metal grating with moderate thickness and high filling factor can lead to coupling between the quasi-guided-mode and cavity mode. The resonant interaction between the two modes can influence the field distribution, such as the magnetic field near the grating, which results in extraordinary absorption. Absorption efficiency can be optimized up to 99.16%. We also show that the absorption peak can be readily tuned just by varying the subwavelength grating period.

© 2013 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(240.6680) Optics at surfaces : Surface plasmons
(260.5740) Physical optics : Resonance
(350.2450) Other areas of optics : Filters, absorption
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Thin Films

History
Original Manuscript: August 13, 2013
Revised Manuscript: October 29, 2013
Manuscript Accepted: November 13, 2013
Published: December 10, 2013

Citation
Wenchao Zhou, Yihui Wu, Muxin Yu, Peng Hao, Guigen Liu, and Kaiwei Li, "Extraordinary optical absorption based on guided-mode resonance," Opt. Lett. 38, 5393-5396 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-24-5393

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