Evaluation of Kerr constant of blue-phase liquid crystals by measuring off-axis retardation in vertical electric field cells

Pao Ju Hsieh*, Huang-Ming Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Because of the nonuniform electric field of the in-plane-switching cell in the thickness direction, an accurate and efficient way for evaluating the Kerr constant of blue-phase liquid crystal (BPLC) needs to be developed. This study demonstrates a method for evaluating the Kerr constant by measuring the off-axisinduced retardation (Rth) change in normal vertical field cells using a commercial polarimeter. The angledependent behavior of the R th change is observed as an electric-tunable positive C retarder. In this paper, a sigmoid fitting model has been chosen for calculating the Kerr constant for considering the very small intrinsic birefringence of the BPLC.

Original languageEnglish
Pages (from-to)5299-5302
Number of pages4
JournalApplied Optics
Volume50
Issue number27
DOIs
StatePublished - 20 Sep 2011

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