35‐4: Color holographic display using quantum‐dot doped liquid crystal

Abstract

We propose the use of a nematic liquid crystal (LC) doped with quantum dots (QDs) to realize a color 3D holographic display. The material has super large optical nonlinearity and could achieve a fast response time ~ 8.46ms. The constructed 3D display shows images at different depths and vivid RGB images at a video refresh rate. Author KeywordsColor holographic display; nematic liquid crystal; quantum dots. Objective and backgroundHolographic display has attracted worldwide attention as a promising three-dimensional (3D) display technique. It can reconstruct both the phase and amplitude information of an object or a scene, as if it comes from a nature scene [1-3]. However, it is difficult to display a wide-view and color holographic images by using a traditional electrically-addressed spatial light modulator(SLM) due to its limited bandwidth [4][5][6][7]. Therefore, photorefractive (PR) materials become a kind of choice to produce a vivid 3D display [8]. Among them, photorefractive polymer has many advantages such as high spatial resolution and high diffraction efficiency. Nevertheless, photorefractive polymer cannot achieve a fast response time to realize a real-time display. In our previous work, without applying any external voltage, we employed an azo-dye doped nematic LC [9] material to display a 25-Hz holographic video. In addition, a quantum dot (QD) doped nematic LC was also applied for holographic display [10], which could achieve high efficiency and fast response, simultaneously.

Effects of CdTe Quantum Dot Dispersal on Current-Voltage Characteristics in Liquid Crystalline Mediums of E63, E7 and SCLP

“…Praseetha et al [16] found that CdSe QD doped LC can be considered as a good candidate for the optical limiting application. Wang et al [17] achieved a fast response time in 5CB LC holographic display through using ZnS/InP QD dispersal. Kocakülah et al [18] yielded decreased response time and threshold voltage in polymer stabilized LCs by dispersal of CdSeS/ZnS QDs.…”