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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 7 — Apr. 1, 2013
  • pp: 1028–1030

Two-dimensional subwavelength gratings with different frontside/backside reflectance

Hans Lochbihler and Yan Ye  »View Author Affiliations


Optics Letters, Vol. 38, Issue 7, pp. 1028-1030 (2013)
http://dx.doi.org/10.1364/OL.38.001028


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Abstract

A concept of two-dimensional periodic subwavelength gratings exhibiting different reflectance on the front and back sides is presented. This structure incorporates an arrangement of a metalized hole array and a nanodot array on top. We exemplify the optical properties for an aluminum grating with 243 nm period, and we demonstrate its color filtering properties for unpolarized light in reflectance as well as in transmittance yielding different colors for frontside and backside illumination. These findings have been confirmed by a numerical study. The gratings may be replicated by a simple nanoimprint process on plastic foils predestined for industrial mass production.

© 2013 Optical Society of America

OCIS Codes
(330.1690) Vision, color, and visual optics : Color
(310.6628) Thin films : Subwavelength structures, nanostructures
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:
Thin Films

History
Original Manuscript: September 19, 2012
Revised Manuscript: February 19, 2013
Manuscript Accepted: February 19, 2013
Published: March 20, 2013

Citation
Hans Lochbihler and Yan Ye, "Two-dimensional subwavelength gratings with different frontside/backside reflectance," Opt. Lett. 38, 1028-1030 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-7-1028


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