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Applied Optics

Applied Optics


  • Vol. 39, Iss. 7 — Mar. 1, 2000
  • pp: 1168–1173

Interphase in plasma-deposited films on plastics: effect on the spectral properties of optical filters

Daniel Poitras and Ludvik Martinu  »View Author Affiliations

Applied Optics, Vol. 39, Issue 7, pp. 1168-1173 (2000)

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The plasma-enhanced chemical vapor deposition of optical coatings on plastic substrates leads to the formation of a physically thick (≈50–100-nm) interfacial region (or interphase). We propose, based on our earlier spectroellipsometric (in situ and ex situ) and spectrophotometric (ex situ) studies, an optical model for the description of the interphase refractive-index profile n(z). We study in detail the effect of such an interphase on the spectral performance of various optical filters (antireflective V-coat, W-coat, achromatic W-coat, and minus filter). It is shown that considering the inhomogeneous n(z) profile in the design can improve the optical performance of some filters.

© 2000 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(310.0310) Thin films : Thin films
(310.1620) Thin films : Interference coatings
(310.6860) Thin films : Thin films, optical properties
(350.5400) Other areas of optics : Plasmas

Original Manuscript: June 9, 1999
Revised Manuscript: November 8, 1999
Published: March 1, 2000

Daniel Poitras and Ludvik Martinu, "Interphase in plasma-deposited films on plastics: effect on the spectral properties of optical filters," Appl. Opt. 39, 1168-1173 (2000)

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