Voltage transfer function as an optical method to characterize electrical properties of liquid crystal devices

Voltage transfer function as an optical method to characterize electrical properties of liquid crystal devices

The voltage transfer function is a rapid and visually effective method to determine the electrical response of liquid crystal (LC) systems using optical measurements. This method relies on cross-polarized intensity measurements as a function of the frequency and amplitude of the voltage applied to t...

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Bibliographic Details
Main Authors: Bateman, James (Author), Proctor, Matthew (Author), Buchnev, Oleksandr (Author), Podoliak, Nina (Author), D'Alessandro, Giampaolo (Author), Kaczmarek, Malgosia (Author)
Format: Article
Language:English
Published: 2014-06-18.
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Summary:The voltage transfer function is a rapid and visually effective method to determine the electrical response of liquid crystal (LC) systems using optical measurements. This method relies on cross-polarized intensity measurements as a function of the frequency and amplitude of the voltage applied to the device. Coupled with a mathematical model of the device it can be used to determine the device time constants and electrical properties. We validate the method using photorefractive LC cells and determine the main time constants and the voltage dropped across the layers using a simple nonlinear filter model.

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