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P‐96: Experimental Measurement of Cauchy Values for Δn of Nematic Liquid Crystals
Author(s) -
Gandhi Jignesh,
Anderson James E.
Publication year - 2002
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1830865
Subject(s) - birefringence , wavelength , cauchy distribution , liquid crystal , refractive index , dispersion (optics) , optics , materials science , measure (data warehouse) , crystal (programming language) , optoelectronics , physics , mathematics , mathematical analysis , computer science , database , programming language
Refractive indices of liquid crystal materials change dramatically with the wavelength of light due to dispersion. The Cauchy formula provides an empirical way of describing the relationship of various refractive indices of liquid crystal with wavelength of light. It is often difficult to measure individual refractive indices (n e and n o ) at several wavelengths and hence the birefringence Δn. In most liquid crystal device simulations, it is important to know Δn as a function of wavelength for accurate performance prediction. Here we propose a simple method of measuring Δn of liquid crystalline materials at various wavelengths and obtaining the Cauchy values for the LC material.