利用合成谱在计算全息图中编码多个物体的方法  

Encoding multiple objects in computer-generated holograms with synthetic spectrum

作　　者：郭荣礼[1] 路绍军[1] 韩军[1] 于洵[1] 侯瑞宁[2] 

机构地区：[1]西安工业大学光电工程学院,陕西西安710032 [2]陕西科技大学理学院,陕西西安710021

出　　处：《应用光学》2011年第5期854-859,共6页Journal of Applied Optics

基　　金：西安市科技局创新支撑计划资助项目(CXY09021(3));西安工业大学校长基金项目(XAGDXJJ0901)

摘　　要：提出在迂回位相傅里叶变换计算全息图中利用合成谱记录多个物体的方法。该方法利用多个物体合成的傅里叶频谱,代替传统的迂回位相型计算全息图中的单一频谱,在一幅计算全息图中完成多个物体的编码。再现时多个物体同时再现在同一衍射级的周围,并且再现像的形式可以多种多样。采用液晶空间光调制器(LC-SLM)完成计算全息图的光学再现,实验验证了方法的有效性。结果表明:该方法可有效提高计算全息图的信息容量。A method for encoding multiple objects by using the synthetic spectrum in Fourier transform computer generated holograms（CGH） of detour phase is proposed.The method allows multiple objects encoded in a CGH using synthesized spectrum instead of single spectrum used in conventional method.In reconstruction,multiple objects are reconstructed around the same diffraction order simultaneously,and various forms of reconstructed images are obtained easily.Optical reconstruction of the CGH was demonstrated with a liquid crystal-spatial light modulator（LC-SLM）.The experiment result verified the effectiveness of the method and it showed that the method could improve the information capacity of CGH.

关 键 词：计算全息图 多通道全息图 傅里叶变换 LC-SLM 

分 类 号：TN911.73[电子电信—通信与信息系统] O438[电子电信—信息与通信工程]