Abstract This report discusses the effect of speckle size on the quality of holographic images based on a liquid-crystal-on-silicon (LCoS) spatial light modulator (SLM). Further, it proposes methods of quantifying the average speckle size and holographic image resolution. These methods enable both characteristics to be compared using the same unit (the number of pixels in the holographic image), providing an intuitive and effective comparative analysis method. In particular, by varying the LCoS resolution ratio, the change in the resolvable minimum pixels of the holographic image is interpreted in conjunction with the average speckle size; moreover, an analysis of the correlation between the latter two is presented. This approach, based on LCoS resolution division, could provide useful insights into single-SLM-based, full-color holographic displays using space division. Furthermore, it could be extended to other components, including more advanced LCoS SLMs, and used to identify the relative effects on image quality with speckles.

中文翻译：

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基于硅基液晶空间光调制器的全息显示器的定量表征

摘要 本报告讨论了散斑大小对基于硅基液晶 (LCoS) 空间光调制器 (SLM) 的全息图像质量的影响。此外，它提出了量化平均散斑大小和全息图像分辨率的方法。这些方法可以使用相同的单位（全息图像中的像素数）比较两种特性，提供了一种直观有效的比较分析方法。特别是，通过改变 LCoS 分辨率，全息图像的可分辨最小像素的变化与平均散斑大小一起解释；此外，还对后两者之间的相关性进行了分析。这种基于 LCoS 分辨率划分的方法可以提供对基于单 SLM、使用空间分割的全彩色全息显示器。此外，它可以扩展到其他组件，包括更先进的 LCoS SLM，并用于识别斑点对图像质量的相对影响。