標題: Evaluation of Kerr constant of blue-phase liquid crystals by measuring off-axis retardation in vertical electric field cells
作者: Hsieh, Pao-Ju
Chen, Huang-Ming Philip
光電工程學系
Department of Photonics
公開日期: 20-Sep-2011
摘要: 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-axis-induced retardation (R(th)) change in normal vertical field cells using a commercial polarimeter. The angle-dependent 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. (C) 2011 Optical Society of America
URI: http://dx.doi.org/10.1364/AO.50.005299
http://hdl.handle.net/11536/19104
ISSN: 0003-6935
DOI: 10.1364/AO.50.005299
期刊: APPLIED OPTICS
Volume: 50
Issue: 27
起始頁: 5299
結束頁: 5302
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