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Influence of lateral dimensions of the irregularities on the optical quantities of rough surfaces

Basic information
Original title:Influence of lateral dimensions of the irregularities on the optical quantities of rough surfaces
Authors:Daniel Franta, Ivan Ohlídal
Further information
Citation:FRANTA, Daniel and Ivan OHLÍDAL. Influence of lateral dimensions of the irregularities on the optical quantities of rough surfaces. Journal of Optics A: Pure and Applied Optics, Bristol, GB: IOP Publishing Ltd, 2006, vol. 8, No 9, p. 763-774. ISSN 1464-4258.Export BibTeX
@article{711191,
author = {Franta, Daniel and Ohlídal, Ivan},
article_location = {Bristol, GB},
article_number = {9},
keywords = {roughness; ellipsometry; spectrophotometry},
language = {eng},
issn = {1464-4258},
journal = {Journal of Optics A: Pure and Applied Optics},
title = {Influence of lateral dimensions of the irregularities on the optical quantities of rough surfaces},
volume = {8},
year = {2006}
}
Original language:English
Field:Optics, masers and lasers
Type:Article in Periodical
Keywords:roughness; ellipsometry; spectrophotometry

In this paper the influence of lateral dimensions of the irregularities on the optical quantities, i.e. on reflectance, transmittance, scattering losses and ellipsometric ratio of randomly rough surfaces, is discussed in detail. This discussion is based on theoretical (simulated) data calculated using the Rayleigh-Rice theory (RRT). It is shown that the optical quantities mentioned are strongly dependent on the quantities characterising the lateral dimensions of the irregularities, e.g. on the autocorrelation length. The simulated data are also used to investigate the possibilities and limitations of the scalar diffraction theory (SDT) and effective medium approximation (EMA) at treating the experimental data in practice. On the basis of these theoretical studies it is, moreover, shown that a combination of the SDT and EMA can be employed as a reasonable approximation for describing the interaction of light with randomly rough surfaces. Thus, from the results presented in this paper, it is evident that this combination could be a promissing treatment for experimental data corresponding to the optical quantities of randomly rough surfaces.

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