The Holographic Applications Of Polymer Dispersed Liquid Crystals Devices

People require better service in information display devices and storage in these days of information overload. The holography invented by physicist Dennis Gabor has been a research hotspot as it can store and recover information perfectly.The applications of optical holography in three dimensional display and data storage are studied in this article. In current holographic display systems, the laser beams are expanded to a proper size using lenses groups. These optical components are usually too bulky to be applied in consumer electronics, especially for flat-panel display devices. Moreover, the diffraction efficiency of existing flat-panel coherent backlight is quite low that cannot used in practical applications. The reason that reduce the low diffraction efficiency is analyzed through numerical simulations. Three kinds of compact coherent backlight are proposed and experimentally verified. The diffraction efficiencies of the proposed designs are one order of magnitude higher than previous design.Polymer dispersed in liquid crystal based holographic storage is studied. A holographic disc is achieved in experiment. Furthermore, the life time of the holographic disc is quite long while the life of the material is almost 50 years.