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arXiv 1303.4255physics.optics
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全息图自外推法提高数字全息分辨率

Resolution enhancement in digital holography by self-extrapolation of holograms

Tatiana Latychevskaia, Hans-Werner Fink

摘要:

通常认为,数字全息术中的分辨率受到捕获的全息记录的尺寸的限制。在这里,我们提出了一种方法来规避这一限制,通过自外推实验全息图超出实际捕获的区域。这是通过首先填充全息图的周围环境,然后进行迭代重建过程来完成的。因此,超出实验检测区域的波前被恢复,并且全息图重建显示出增强的分辨率。为了证明这一概念的力量,我们将其应用于模拟以及实验全息图。

英文摘要:

It is generally believed that the resolution in digital holography is limited by the size of the captured holographic record. Here, we present a method to circumvent this limit by self-extrapolating experimental holograms beyond the area that is actually captured. This is done by first padding the surroundings of the hologram and then conducting an iterative reconstruction procedure. The wavefront beyond the experimentally detected area is thus retrieved and the hologram reconstruction shows enhanced resolution. To demonstrate the power of this concept, we apply it to simulated as well as experimental holograms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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