Broadband Spectral Domain Interferometry for Optical Characterization of Nematic Liquid Crystals

Applied Sciences

VittorioMariadi Pietro¹  Aurélie Jullien¹ 

[1] Institut de Physique de Nice, Université Côte d’Azur, CNRS UMR 7010, 1361 route des Lucioles, 06560 Valbonne, France;

关键词: Nematic liquid crystals;    optical characterization;    spectral phase;    birefringence;   

DOI  :  10.3390/app10144701

来源: DOAJ

【 摘 要 】

In this paper, broadband Spectral Domain Interferometry provides single-shot optical characterization of dispersive thermotropic nematic liquid crystals. The proposed experimental setup enables measuring the chromatic dispersion, the extended Cauchy equation parameters knowing the optical index for one wavelength, and the thermo-optical coefficients to ascribe the dependence of the optical index with the inner temperature. The analysis is applied to the commonly known $E7$ mixture and to $MLC2132$ , whose chromatic properties are not referenced although the mixture is commercial, demonstrating the latter’s interest for electro-optical or thermo-optical applications of thick nematic liquid crystal cells.

【 授权许可】

Unknown