Estimation of optical parameters of very thin films

Birgin‚ E.G.; Chambouleyron‚ I.E.; Martınez‚ J.M.; Ventura‚ S.D.

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(Reference retrieved automatically from Google Scholar through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Estimation of optical parameters of very thin films

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Author(s):	Birgin‚ E.G. ; Chambouleyron‚ I.E. ; Martınez‚ J.M. ; Ventura‚ S.D. Total Authors: 4
Document type:	Journal article
Source:	APPLIED NUMERICAL MATHEMATICS; v. 47, n. 2, p. 109-119, 2003.
Abstract
In recent papers, the problem of estimating the thickness and the optical constants (refractive index and absorption coefficient) of thin films using only transmittance data has been addressed by means of optimization techniques. Models were proposed for solving this problem using linearly constrained optimization and unconstrained optimization. However, the optical parameters of "very thin" films could not be recovered with methods that are successful in other situations. Here we introduce an optimization technique that seems to be efficient for recovering the parameters of very thin films. (C) 2003 IMACS. Published by Elsevier B.V. All rights reserved. (AU)

FAPESP's process:	01/04597-4 - Computational Methods in Optimization
Grantee:	José Mário Martinez Perez
Support Opportunities:	Research Projects - Thematic Grants

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