Nonlinear optical refraction of the dye-doped E7 thermotropic liquid crystal at the nematic-isotropic phase transition

Content Provider	Semantic Scholar
Author	Lenart, Vinícius Mariani Cruz, Gerson Kniphoff Da Gómez, Sergio Leonardo Turchiello, Rozane De Fátima Bechtold, I. H. Vieira, A. Aguiar Gallardo, Hugo
Copyright Year	2013
Abstract	It is known that the doping of liquid crystal with dyes usually changes the physical properties of the host, like the transition temperatures and the optical absorption among others. In this work we report a study of the nonlinear optical refraction of a dye doped sample of the E7 thermotropic liquid crystal by the Z-scan technique. It was found that the nonlinear refraction of the sample is higher than the undoped one, diverging at the clearing point. Close to the N-I transition, the nonlinear birefringence is characterized by a critical exponent that seams to confirm the tricritical hypothesis of the nature of the N-I phase transition, being independent of the doping.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://arxiv.org/pdf/1304.4537v1.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article