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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 1 — Jan. 1, 2012
  • pp: 55–61

Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties

Y. J. Liu, H. T. Dai, Eunice S. P. Leong, J. H. Teng, and X. W. Sun  »View Author Affiliations


Optical Materials Express, Vol. 2, Issue 1, pp. 55-61 (2012)
http://dx.doi.org/10.1364/OME.2.000055


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Abstract

We demonstrate a two-dimensional absorbing photonic crystal with a uniform real part of the refractive index, but a periodically modulated imaginary part. It was realized through back-filling the voids of a periodic array of azo-dye-doped polymeric disks with the same undoped polymers. The photonic crystals were characterized using the diffraction method. The experimental results showed that only the light in the spectral range where the azo-dye absorbed was diffracted, indicating that a purely absorbing photonic crystal was formed. This absorbing photonic crystal also showed switchable diffraction properties due to the trans-cis isomerization of the azo-dye under the light pump.

© 2011 OSA

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(160.2900) Materials : Optical storage materials
(160.5320) Materials : Photorefractive materials
(230.1150) Optical devices : All-optical devices

ToC Category:
Optical Storage Media

History
Original Manuscript: November 10, 2011
Revised Manuscript: November 30, 2011
Manuscript Accepted: December 2, 2011
Published: December 7, 2011

Citation
Y. J. Liu, H. T. Dai, Eunice S. P. Leong, J. H. Teng, and X. W. Sun, "Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties," Opt. Mater. Express 2, 55-61 (2012)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-2-1-55


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