Abstract
A PBS from an idea LC was demonstrated by the structure with double-sided patterned electrodes biased by a uniform electric field. The binary phase grating was formed by two periodically arranged indium-tin-oxide (ITO) stripes. Adjusting the applied voltage, the orientation of LC molecules was controlled by the patterned ITO electrodes and resulting with a phase difference occurring between two domains embodying in achieving applications for diffractive devices. In this work, E7 and MJ041937 (VA) liquid-crystal materials were prepared. For MJ041937 (VA), diffraction efficiencies of the zero and the first order were performed with results of 1~2% and 40% respectively. Whereas, for E7, diffraction efficiencies of the zero and the first order are 0.1%~0.5% and 40% respectively. However, these devices demonstrate advantages of no scattering, and no diffraction during no applying voltage, a spread selection in input wavelengths, low voltages and retaining the original polarization without applying field for MJ041937 (VA)