Tracking capacitance of liquid crystal devices to improve polarization rotation accuracy

TL;DR

This paper introduces a capacitance tracking method for nematic liquid crystal devices that enhances polarization rotation accuracy across various temperatures by locking onto the device's unique capacitance.

Contribution

The paper presents a novel capacitance tracking technique using a modified relaxation oscillator circuit to improve polarization control in liquid crystal devices.

Findings

Achieved precise polarization rotation over a wide temperature range.

Demonstrated the effectiveness of capacitance locking for accurate liquid crystal control.

Developed a circuit that simultaneously measures capacitance and drives the device.

Abstract

We report a capacitance tracking method for achieving arbitrary polarization rotation from nematic liquid crystals. By locking to the unique capacitance associated with the molecular orientation, any polarization rotation can be achieved with improved accuracy over a wide temperature range. A modified relaxation oscillator circuit that can simultaneously determine the capacitance and drive the rotator is presented.