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Proceedings Paper

Complex transmittance gratings based on subwavelength metallic structures
Author(s): G. Vincent; R. Haïdar; S. Collin; E. Cambril; S. Velghe; J. Primot; F. Pardo; J.-L. Pelouard
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Paper Abstract

Subwavelength metallic structures are used to design gratings with a great variety of transmittance levels. Such gratings can answer growing needs for complex transmittance devices, particularly useful for wave-front analysis applications. Having in mind the conception of a perfectly sinusoidal transmittance for the mid-infrared, we have decided to test the ability of subwavelength lamellar gratings to code the transmittance with several levels. In order to calibrate gratings transmission, as a function of the fill factor, we have designed, realized and measured samples made of six 2mm x 2mm gratings, with transmittance ranging from 10% to 95%. Experimental results for TM- and TE-polarized light are reported and analysed.

Paper Details

Date Published: 20 April 2006
PDF: 12 pages
Proc. SPIE 6195, Nanophotonics, 61951K (20 April 2006); doi: 10.1117/12.668533
Show Author Affiliations
G. Vincent, Onera (France)
R. Haïdar, Onera (France)
S. Collin, Lab. de Photonique et de Nanostructures, CNRS (France)
E. Cambril, Lab. de Photonique et de Nanostructures, CNRS (France)
S. Velghe, Onera (France)
J. Primot, Onera (France)
F. Pardo, Lab. de Photonique et de Nanostructures, CNRS (France)
J.-L. Pelouard, Lab. de Photonique et de Nanostructures, CNRS (France)

Published in SPIE Proceedings Vol. 6195:
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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