A new, accurate and fast spectrophotometric method for the determination of the optical constants of arbitrary absorptance thin films from a single transmittance curve: Application to dielectric materials

摘要

The determination of the complex refractive index of thin films usually requires the highest accuracy. In this paper, we report on a new and accurate method based on a spectral rectifying process of a single transmittance curve. The agreements with simulated and real experimental data show the helpfulness of the method. The case of materials having arbitrary absorption bands at midpoint in spectral range, such as pigments in guest-host polymers, is also encompassed by this method.