Acta Optica Sinica, Volume. 8, Issue 2, 157(1988)
Determination of extinction coefficient of optical thin films from the special absorption
For a weak absorbing film, if the refractive indices of the film and the substrate are set among certain ranges the formula (1-R)/T=exp(4πkd/λ) can be used for determination of the extinction coefficient of the film. The formula, however, is not statable for the thick strong absorbing film, in which the interference effect has vanished.
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WU QIHONG. Determination of extinction coefficient of optical thin films from the special absorption[J]. Acta Optica Sinica, 1988, 8(2): 157
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