Abstract

In this paper, the suitability of using the Kramers–Kronig transform to routinely extract optical constants from near-normal incidence reflectance spectra of solids and liquids is demonstrated. In addition, the possibility of utilizing the Kramers–Kronig transform as a linearizing transform for near-normal incidence reflectance spectra is investigated. Also, several commercial Kramers–Kronig software packages were utilized in determining the optical constants from the near-normal incidence reflectance of Plexiglas. Unexpectedly, the results produced by the various packages differed significantly. The near-normal reflectance of water was measured, the Kramers–Kronig transform was applied to extract the optical constants of water, and the result was compared to values found in the literature. Furthermore, the Kramers–Kronig transforms of near-normal incidence reflectance spectra of various concentrations of sugar in water were calculated to evaluate its use as a linearizing transform for quantitative applications.

Optical constants of various chromites as determined by Kramers–Kronig analysis

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Validity of the Kramers-Kronig transformation used in reflection spectroscopy

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Optical constants of lithium deposits as determined from the Kramers-Kronig analysis

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Optical Constants of Thin Films by a Kramers–Kronig Method

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Kramers-Kronig Analysis of Relative Reflectance Spectra Measured at an Oblique Angle

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