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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 4 — Feb. 1, 2014
  • pp: A110–A113

Rugate filters fabricated from dense and porous magnetron sputtered WO3 films

Jean Desforges, Corentin Cheminot, Nicolas Laville, and Georges Bader  »View Author Affiliations


Applied Optics, Vol. 53, Issue 4, pp. A110-A113 (2014)
http://dx.doi.org/10.1364/AO.53.00A110


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Abstract

Single-material interference filters are obtained from magnetron sputtered alternating layers of WO3 deposited at different pressures. The stop band is investigated with respect to the refractive index contrast and the total number of layers. Some features of rugate filters are also investigated. We show experimentally that a sine-wave index profile modulation can be used to suppress the harmonic stop bands located at odd fractional wavelengths. We also show experimental evidence that sidelobes near the stop band can be attenuated by using a sine-wave index profile that has a variable amplitude.

© 2013 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(310.1620) Thin films : Interference coatings
(310.1860) Thin films : Deposition and fabrication

History
Original Manuscript: September 4, 2013
Manuscript Accepted: October 7, 2013
Published: November 27, 2013

Citation
Jean Desforges, Corentin Cheminot, Nicolas Laville, and Georges Bader, "Rugate filters fabricated from dense and porous magnetron sputtered WO3 films," Appl. Opt. 53, A110-A113 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-4-A110

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