Investigation of the Kerr effect and third-order susceptibility constants in a nematic liquid crystal |
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Authors: | MH Majles Ara SH MousaviZ Mousavi MS Zakerhamidi |
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Institution: | a Photonics Laboratory, Physics Department, Tarbiat Moallem University, Tehran, Iranb Research Institute of Applied Physics and Astronomy, University of Tabriz, Tabriz, Iran |
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Abstract: | In this paper, the static Kerr effect was investigated for the W-1680 at temperatures above the nematic-isotropic transition temperature and compared with 9CHBT. We experimentally measured the electro-optical Kerr constant and the pre-transitional behavior. The Kerr law has been confirmed and the variation of the inverse Kerr constant, with a temperature above the smectic-isotropic transition temperatures, were determined. The linear dependence of (T − T*)− 1 on the Kerr constant is found to be in good agreement with the predications of the Landau-De Gennes model. Additionally, the temperature dependence of third order susceptibility has been studied. This value for these samples will reduce when the temperature increases. |
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Keywords: | Nematic liquid crystal Kerr constant Temperature dependence Third order susceptibility Electro-optical effect |
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