Measurement method of liquid crystal birefringence based on Michelson interference

LI Rusong; MA Hongmei; YE Wenjiang

doi:10.7510/jgjs.issn.1001-3806.2016.04.007

In order to obtain the birefringence of nematic liquid crystal, a novel measurement method was put forward based on Michelson interference principle. A wedge-shaped cell was put into the Michelson interferometer. The refractive indexes of ordinary and extraordinary lights were accurately measured by adjusting the polarized direction of incident light. The results show that this method is simple and with high precision by converting the measurement of refractive index to the measurement of length and the counts of interference fringes. This method is very important for theoretical research and practical development of liquid crystal display devices and has some promotional value in the production of liquid crystal materials and liquid crystal devices.

Measurement method of liquid crystal birefringence based on Michelson interference

Corresponding author: YE Wenjiang, wenjiang_ye@hebut.edu.cn

1. School of Sciences, Hebei University of Technology, Tianjin 300401, China

Received Date: 2015-06-12

Accepted Date: 2015-07-15

Available Online: 2016-07-25

Abstract: In order to obtain the birefringence of nematic liquid crystal, a novel measurement method was put forward based on Michelson interference principle. A wedge-shaped cell was put into the Michelson interferometer. The refractive indexes of ordinary and extraordinary lights were accurately measured by adjusting the polarized direction of incident light. The results show that this method is simple and with high precision by converting the measurement of refractive index to the measurement of length and the counts of interference fringes. This method is very important for theoretical research and practical development of liquid crystal display devices and has some promotional value in the production of liquid crystal materials and liquid crystal devices.

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Reference (19)

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Measurement method of liquid crystal birefringence based on Michelson interference

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