Improving performance of single-pass real-time holographic projection
Improving performance of single-pass real-time holographic projection
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DOI：
10.1016/j.optcom.2019.124666
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发表时间：
2020-02
影响因子：
2.4
通讯作者：
Peter J. Christopher;R. Mouthaan;Vamsee Bheemireddy;T. Wilkinson
中科院分区：
文献类型：
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作者：
Peter J. Christopher;R. Mouthaan;Vamsee Bheemireddy;T. Wilkinson
这项工作描述了一种新的时分复用全息投影在二进制相位器件上的方法。与其他时分复用算法不同的是，每一帧都是独立修改的目标图像的逆变换，单变换时分复用(STTM)全息图生成从单个逆变换产生多个子帧。然后，衍射场上均匀间隔的复数旋转允许通过使用N个子帧在二进制器件上仿真包含2N个调制电平的器件。与一步相位恢复(OSPR)相比，STTM产生的均方误差最高可达N=5，而OSPR子帧的生成时间为等价OSPR帧的1N。给出了STTM方法的数学证明，并引入了一种混合方法，允许将STTM与OSPR结合使用，以结合性能优势。
This work describes a novel approach to time-multiplexed holographic projection on binary phase devices. Unlike other time-multiplexed algorithms where each frame is the inverse transform of independently modified target images, Single-Transform Time-Multiplexed (STTM) hologram generation produces multiple sub-frames from a single inverse transform. Uniformly spacing complex rotations on the diffraction field then allows the emulation of devices containing 2 N modulation levels on binary devices by using N sub-frames. In comparison to One-Step Phase Retrieval (OSPR), STTM produces lower mean squared error for up to N= 5 than the equivalent number of OSPR sub-frames with a generation time of 1 N of the equivalent OSPR frame. A mathematical justification of the STTM approach is presented and a hybrid approach is introduced allowing STTM to be used in conjunction with OSPR in order to combine performance benefits.