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Resampling ring masks in spatial spectral domain for speckle reduction in one-shot digital holography

机译：重采样空间光谱域中的环形掩模，以减少单次数字全息中的斑点

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摘要

A resampling ring-mask method in spatial spectral domain (RRM-SSD) is proposed for speckle reduction in one-shot digital holography. Spatial spectrum of a hologram with speckle is divided into several subspectra using the resampling ring masks. Different subspectra are individually used to obtain the corresponding reconstructed amplitude images by the angular spectrum method. With the random distribution of the speckle, averaging these uncorrelated amplitude images would successfully enable speckle-reduced reconstruction. No specific operations for hologram recording or complex process for reconstruction are required in this method. Comparison with the previous rectangular mask method in spatial domain proves the advantage of the RRM-SSD method for both speckle reduction and high-resolution reconstruction. Experimental results show that the RRM-SSD method is efficient and simple for speckle reduction, which can be widely used in holographic imaging.
机译：提出了一种在空间光谱域中的重采样环形掩模方法（RRM-SSD），以减少单次数字全息中的斑点。带有斑点的全息图的空间光谱使用重采样环掩模分为几个子光谱。通过角谱方法，分别使用不同的子谱来获得相应的重构振幅图像。利用散斑的随机分布，对这些不相关的振幅图像进行平均将成功地实现散斑减少的重建。此方法不需要全息图记录的特定操作或复杂的重建过程。在空间域上与以前的矩形遮罩方法进行比较证明了RRM-SSD方法在减少斑点和高分辨率重建方面的优势。实验结果表明，RRM-SSD方法有效且简便地减少了斑点，可广泛应用于全息成像中。

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  • 来源
    《Optical engineering》 |2018年第11期|113101.1-113101.5|共5页
  • 作者

    Wenhui Zhang; Hua Zhang; Guofan Jin; Kun Liu; Liangcai Cao;

  • 作者单位

    Tsinghua University, State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Beijing, China;

    Tsinghua University, State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Beijing, China;

    Tsinghua University, State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Beijing, China;

    Ministry of Education, Tianjin University, College of Precision Instrument and Optoelectronics Engineering, Key Laboratory of Optoelectronics Information Technology, Tianjin, China;

    Tsinghua University, State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Beijing, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    digital holography; speckle reduction; angular spectrum method; noise in imaging system;

    机译：数字全息术减少斑点;角谱法成像系统中的噪声;

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