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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 25 — Sep. 1, 1997
  • pp: 6364–6371

Problem of ambiguity in the determination of optical constants of thin absorbing films from spectroscopic reflectance and transmittance measurements

K. Lamprecht, W. Papousek, and G. Leising  »View Author Affiliations


Applied Optics, Vol. 36, Issue 25, pp. 6364-6371 (1997)
http://dx.doi.org/10.1364/AO.36.006364


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Abstract

We propose a new and simple procedure to overcome the ambiguity in the determination of optical constants of thin absorbing films from spectroscopic reflectance and transmittance measurements. The basis for the proposed method is an error analysis with the help of an error simulation technique and an error variation technique. We show that in practice (owing to experimental errors) it is not possible to overcome the problem of ambiguity by normal-incidence spectroscopic measurements alone. At least one oblique-incidence measurement is necessary for unambiguously determining the optical constants of the film. We discuss the consequences of experimental errors of the measured transmittance and reflectance values for the determination of the optical constants.

© 1997 Optical Society of America

History
Original Manuscript: December 20, 1996
Revised Manuscript: April 9, 1997
Published: September 1, 1997

Citation
K. Lamprecht, W. Papousek, and G. Leising, "Problem of ambiguity in the determination of optical constants of thin absorbing films from spectroscopic reflectance and transmittance measurements," Appl. Opt. 36, 6364-6371 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-25-6364

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