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Randomly displaced phase distribution design and its advantage in page-data recording of Fourier transform holograms

机译:随机位移相位分布设计及其在傅里叶变换全息图的页数据记录中的优势

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摘要

For Fourier transform holography, an effective random phase distribution with randomly displaced phase segments is proposed for obtaining a smooth finite optical intensity distribution in the Fourier transform plane. Since unitary phase segments are randomly distributed in-plane, the blanks give various spatial frequency components to an image, and thus smooth the spectrum. Moreover, by randomly changing the phase segment size, spike generation from the unitary phase segment size in the spectrum can be reduced significantly. As a result, a smooth spectrum including sidebands can be formed at a relatively narrow extent. The proposed phase distribution sustains the primary functions of a random phase mask for holographic-data recording and reconstruction. Therefore, this distribution is expected to find applications in high-density holographic memory systems, replacing conventional random phase mask patterns.
机译:对于傅立叶变换全息术,提出了一种有效的具有随机位移相段的随机相位分布,以在傅立叶变换平面上获得平滑的有限光强度分布。由于unit相段在平面内随机分布,因此空白为图像提供各种空间频率分量,从而使频谱平滑。此外,通过随机地改变相段尺寸,可以显着减少频谱中单一相段尺寸的尖峰产生。结果,可以在相对窄的范围内形成包括边带的平滑频谱。所提出的相位分布维持了用于全息数据记录和重建的随机相位掩模的主要功能。因此,预期该分布将在高密度全息存储系统中找到应用,以代替常规的随机相位掩模图案。

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