Temperature effect on nonlinear refractive indices of liquid crystals in visible and NIR

The effect of temperature variation on nonlinear refractive indices of several types of liquid crystals (LCs) compound has been reported. Birefringence and the temperature gradients of refractive indices of the LCs are determined. Five samples have been investigated; two of them are E7 and MLC 6241-...

Full description

Saved in:
Bibliographic Details
Published inOptics communications Vol. 363; pp. 188 - 194
Main Authors Abdulkareem, L., Abdalah, S.F., Al Naimee, K., Meucci, R.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.03.2016
Subjects
Extraordinary
Liquid crystal
Refractive index
Extraordinary
Liquid crystal
Refractive index
Online AccessGet full text

Cover

More Information
Summary:The effect of temperature variation on nonlinear refractive indices of several types of liquid crystals (LCs) compound has been reported. Birefringence and the temperature gradients of refractive indices of the LCs are determined. Five samples have been investigated; two of them are E7 and MLC 6241-000. The other three have been obtained by mixing the previous two LCs in different proportions. The measurements performed at 632nm and 1550nm wavelengths using wedged cell refractometer method. The variation in refractive indices and birefringence were fitted theoretically using the modified Vuks equation. Excellent agreement between the fitted values and experimentally is obtained. •The refractive indices of five types of liquid crystals were measured at near infrared region (1550nm) and in temperature range from 290K to 330K, using a wedged cell refractometer method•Excellent agreement between the model and the experimental results is obtained.•The temperature gradients of liquid crystal refractive indices remains always negative.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2015.11.013