We propose a nematic liquid crystal (LC) optical phase plate, with a large continuous in-plane gradient that is variable, and its application to a beam steering device with high efficiency. The device is a vertically aligned, continuous phase, optical phased array (V-COPA) that uses a negative dielectric anisotropy LC material. High steering efficiency of over 95% is demonstrated by modeling the LC director field and its effect on transmitted light. The period of the V-COPA grating can be varied by adjusting an applied voltage profile, which allows for continuous angular control of the diffraction angle. (C) 2008 American Institute of Physics.
Journal of Applied Physics
Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 104, 033109 (2008) and may be found at http://dx.doi.org/10.1063/1.2966300.
Shi, Lei; McManamon, Paul F.; Bos, Philip J. (2008). Liquid Crystal Optical Phase Plate with a Variable In-Plane Gradient. Journal of Applied Physics 104(3) Retrieved from https://oaks.kent.edu/cpippubs/34