Resolving Optical Constants from Reflectance of Liquids in the UV-Visible Range-Reference-Cited by-同舟云学术

Resolving Optical Constants from Reflectance of Liquids in the UV-Visible Range

Published:1999-01 Issue:1 Volume:53 Page:92-96
ISSN:0003-7028
Container-title:Applied Spectroscopy
language:en
Short-container-title:Appl Spectrosc

Author:

Räty Jukka A.¹,Vartiainen Erik M.¹,Peiponen Kai-Erik¹

Affiliation:

1. Measurement and Sensor Laboratory, Research and Development Centre of Kajaani, University of Oulu, Technology Park 127, FIN-87400 Kajaani, Finland (J.A.R.); Department of Physics, Lappeenranta University of Technology, P.O. Box 20, FIN-53851 Lappeenranta, Finland (E.M.V.); and Väisälä Laboratory, Department of Physics, University of Joensuu, P.O. Box 111, FIN-80101 Joensuu, Finland (K.-E.P.)

Abstract

Reflection spectra of liquids were measured in the UV-visible spectral range with the use of a recently developed reflectometer. The complex refractive index of two solutions, lignin and red food color, both diluted in water, were investigated. For the first time a maximum entropy model was applied in recovering complex reflectivities from non-normal incidence reflectance spectra of liquids. The optical constants in the UV-visible range were then resolved by Fresnel's equations.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

Link

http://journals.sagepub.com/doi/pdf/10.1366/0003702991945272

Reference15 articles.

1. Refractive index measurement of turbid colloidal fluids by transmission near the critical angle

2. Refractive index measurement of absorbing and turbid fluids by reflection near the critical angle

3. A linear differentiating refractometer

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