【作者】 胡伟；

【导师】 苏翼凯；

【作者基本信息】 上海交通大学 ， 电磁场与微波技术（专业学位）， 2015， 硕士

【摘要】 在当今这个信息爆炸的时代,人们对于信息的显示终端和存储提出了进一步的要求。物理学家丹尼斯?伽柏在1947年发明的全息技术具有存储并完整恢复大量信息的能力,因此在近些年成为了研究热点。本文主要针对光学全息技术在三维显示和存储中的应用进行研究。由于目前基于空间光调制器的全息三维显示系统中的相干背光模组较为庞大,不利于平板化显示。另一方面,已有的平板化相干背光设计由于衍射效率较低,在实际应用难以使用。本文通过对现有的平板化背光设计进行理论分析和数值仿真,得到导致低衍射效率的主要因素。在此基础上,提出了三种新的平板化相干背光设计,并均在实验中进行验证。三种方案的衍射效率均比已有的背光设计的效率提高一个量级。在全息存储领域,通过对聚合物分散液晶的学习和研究。在实验中利用该材料形成稳定的体光栅,并验证性地实现了全息光盘。另一方面,由于聚合物分散液晶具有长达50年的寿命,使得该全息光盘具有较为客观的使用寿命。总而言之,本文对全息技术在三维显示和数据存储领域中的某些方面进行了研究,并得到了具有一定意义的实验结果。更多还原

【Abstract】 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.更多还原