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Dispersion Relations and Phase Retrieval in Infrared Reflection Spectra Analysis

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Abstract:

A variant of the maximum entropy method (MEM), recently developed by Vartiainen et al., is proposed for infrared reflectivity spectra analysis. The procedure uses a new interpolation algorithm to estimate the so-called error phase that is the key step of the model. As shown by several examples, this approach is a good alternative to the well known Kramers–Kronig phase retrieval relation for the determination of the dielectric function and proved to be particularly efficient in dealing with conductor materials.

Keywords: DIELECTRIC FUNCTION MODEL; INFRARED REFLECTION SPECTROSCOPY; KRAMERS-KRONIG RELATION; MAXIMUM ENTROPY METHOD; PHASE RETRIEVAL

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702011952479

Publication date: June 1, 2001

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