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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 6 — Mar. 20, 2006
  • pp: 2323–2334

Bilayer Al wire-grids as broadband and high-performance polarizers

Yasin Ekinci, Harun H. Solak, Christian David, and Hans Sigg  »View Author Affiliations


Optics Express, Vol. 14, Issue 6, pp. 2323-2334 (2006)
http://dx.doi.org/10.1364/OE.14.002323


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Abstract

We have fabricated, characterized and theoretically analyzed the performance of bilayer (or stacked) metallic wire-grids. The samples with 100 nm period were fabricated with extreme-ultraviolet interference lithography. Transmission efficiency over 50% and extinction ratios higher than 40 dB were measured in the visible range with these devices. Simulations using a finite-difference time-domain algorithm are in agreement with the experimental results and show that the transmission spectra are governed by Fabry-Perot interference and near-field coupling between the two layers of the structure. The simple fabrication method involves only a single lithographic step without any etching and guarantees precise alignment and separation of the two wire-grids with respect to each other.

© 2006 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(120.7000) Instrumentation, measurement, and metrology : Transmission
(160.3900) Materials : Metals
(230.1360) Optical devices : Beam splitters
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization

ToC Category:
Optical Devices

History
Original Manuscript: January 4, 2006
Revised Manuscript: March 2, 2006
Manuscript Accepted: March 14, 2006
Published: March 20, 2006

Citation
Yasin Ekinci, Harun H. Solak, Christian David, and Hans Sigg, "Bilayer Al wire-grids as broadband and high-performance polarizers," Opt. Express 14, 2323-2334 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-6-2323


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