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Applied Optics

Applied Optics


  • Vol. 34, Iss. 34 — Dec. 1, 1995
  • pp: 7914–7924

Determination of the optical constants and thickness of thin films on slightly absorbing substrates

Rusli and G. A. J. Amaratunga  »View Author Affiliations

Applied Optics, Vol. 34, Issue 34, pp. 7914-7924 (1995)

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A method for solving the optical constants of a thin film on a slightly absorbing substrate is proposed. Using only a single-reflectance measurement together with the interference fringes, one can calculate with good accuracy the thickness and the real and imaginary parts of the refractive index of the film. Besides its simplicity, this method also avoids the problem of multiple solutions. We show that this technique is effective in solving for the optical constants of thin films with weak or moderate absorption characteristics, and in particular we applied it to obtain the optical properties of amorphous C thin films on Si.

© 1995 Optical Society of America

Original Manuscript: March 21, 1995
Revised Manuscript: June 26, 1995
Published: December 1, 1995

Rusli and G. A. J. Amaratunga, "Determination of the optical constants and thickness of thin films on slightly absorbing substrates," Appl. Opt. 34, 7914-7924 (1995)

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