Optical properties of two-dimensional liquid crystal gratings fabricated by microrubbing and its application to Stokes polarimetry

摘要

A two-dimensional (2D) liquid-crystal (LC) grating consisting of three LC molecular orientation domains is fabricatedby a microrubbing process, with the aim of application to the Stokes polarimetry. It was found that the in-planeorientation direction, retardation, and twist angle in the obtained LC molecular orientation state varied in space. Thefabricated LC grating was applied to the Stokes polarimetry to ensure the viability of the proposed measurement scheme.As a result, the measured Stokes parameter of the incident light agreed with that of the incident light. Furthermore, wepoint out the possibility of performance adjustability by an applied voltage, which can be a great advantage of the LCgratingStokes polarimetry.