Archivio Istituzionale della RicercaA new technique to measure the principal refractive indexes of a nematic liquid crystal is presented. The method is based on an indirect measurement of the refraction angle by determining the direction of a magnetic field which minimizes the light scattering. With this technique one can perform different light scattering experiments, which require a knowledge of the refractive indexes, on the same crystal slab. The accuracy is better than ±0.15%. A discussion about the systematic error due to the distortion of the director profile near the holder edges and the relative correction is given.
Direct measurement of the two principal refractive indexes of a nematic liquid crystal slab / Miraldi, Elio; Oldano, Claudio; Trossi, Laura; TAVERNA VALABREGA, Piera. - In: APPLIED OPTICS. - ISSN 0003-6935. - 21:22(1982), pp. 4163-4166. [10.1364/AO.21.004163]
Direct measurement of the two principal refractive indexes of a nematic liquid crystal slab
MIRALDI, ELIO;
1982
Abstract
A new technique to measure the principal refractive indexes of a nematic liquid crystal is presented. The method is based on an indirect measurement of the refraction angle by determining the direction of a magnetic field which minimizes the light scattering. With this technique one can perform different light scattering experiments, which require a knowledge of the refractive indexes, on the same crystal slab. The accuracy is better than ±0.15%. A discussion about the systematic error due to the distortion of the director profile near the holder edges and the relative correction is given.
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https://hdl.handle.net/11583/1649518
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