Abstract
The re∞ection of linearly polarized light from an ultrathin biaxially anisotropic dielectric fllm on an isotropic transparent material is investigated in the long-wavelength limit. The approximate expressions for the re∞ection characteristics of s- and p-polarized electromagnetic plane waves are obtained. The analytical approach developed in this paper not only provides insight into the nature of re∞ection problem for biaxially anisotropic ultrathin fllms but also furnishes the methods for resolving the inverse problem for such anisotropic layers. It is shown that a key capability of the developed analytical method is to decouple the usual correlations in the index and the thickness of ultrathin fllms.
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