1 March 1992 Comparison of methods for determining linear birefringence
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Proceedings Volume 1575, 8th Intl Conf on Fourier Transform Spectroscopy; (1992) https://doi.org/10.1117/12.56351
Event: Eighth International Conference on Fourier Transform Spectroscopy, 1991, Lubeck-Travemunde, Germany
For the determination of the ordinary and extraordinary refractive indices of nematic liquid crystals in the infrared spectral region, a refractometer was developed. It is a critical angle refractometer of the Abbe type, basically usable in the range from n equals 1.3 to 1.8 and from 4000 cm-1 to 700 cm-1. The reliability of the measurements is 1 X 10-3 and the spectral resolution is 1.5%. The values of the refractive index derived from the critical angle are used as anchor points for Kramers-Kronig transformation (KKT) of a transmittance spectrum of the compound.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peter Lampen, Peter Lampen, Ernst Heiner Korte, Ernst Heiner Korte, A. Blumenberg, A. Blumenberg, } "Comparison of methods for determining linear birefringence", Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); doi: 10.1117/12.56351; https://doi.org/10.1117/12.56351

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