Spatiotemporal double-phase hologram for complex-amplitude holographic displays  

作　　者：Xiaomeng Sui Zehao He Hao Zhang Liangcai Cao Daping Chu Guofan Jin 隋晓萌;何泽浩;张浩;曹良才;初大平;金国藩(State Key Laboratory of Precision Measurement Technology and Instrument,Department of Precision Instruments,Tsinghua University,Beijing 100084,China;Centre for Photonic Devices and Sensors,Department of Engineering,University of Cambridge,Cambridge CB30FA,UK)

机构地区：[1]State Key Laboratory of Precision Measurement Technology and Instrument,Department of Precision Instruments,Tsinghua University,Beijing 100084,China [2]Centre for Photonic Devices and Sensors,Department of Engineering,University of Cambridge,Cambridge CB30FA,UK

出　　处：《Chinese Optics Letters》2020年第10期15-18,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (NSFC)(Nos. 61827825 and 61775117);Tsinghua University Initiative Scientific Research Program (No. 20193080075);the Cambridge Tsinghua Joint Research Initiative

摘　　要：This Letter describes an approach to encode complex-amplitude light waves with spatiotemporal double-phase holograms(DPHs) for overcoming the limit of the space-bandwidth product(SBP) delivered by existing methods. To construct DPHs, two spatially macro-pixel encoded phase components are employed in the SBP-preserved resampling of complex holograms. Four generated sub-DPHs are displayed sequentially in time for high-quality holographic image reconstruction without reducing the image size or discarding any image terms when the DPHs are interweaved. The reconstructed holographic images contain more details and less speckle noise, with their signal-to-noise ratio and structure similarity index being improved by 14.64% and 78.79%,respectively.

关 键 词：computer generated holography complex amplitude hologram double phase hologram holographic display 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] O438.1[自动化与计算机技术—计算机科学与技术]