Multiplexed Holographic Polymer Dispersed Liquid Crystals

Abstract

We report optical multiplexing techniques in which multiple reflection gratings are created simultaneously within a single film using a one step exposure technique. Utilizing both a spatial multiplexing and time-sequential exposure, we are able to produce a spatially pixelated array of red, green, and blue 'pixels' within our sample, and thus enable the creation of a full-color display through spatial color synthesis techniques. We also report angular multiplexing techniques that enable multiple electrically switchable gratings to coexist in one film.