Lensless computer-generated hologram with wavelength-order resolution consisting of photon sieves
Lensless computer-generated hologram with wavelength-order resolution consisting of photon sieves
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DOI：
10.1088/2040-8986/abb3a9
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发表时间：
2020-09
影响因子：
2.1
通讯作者：
J. Sugisaka;K. Onishi
中科院分区：
文献类型：
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作者：
J. Sugisaka;K. Onishi
我们提出了光子筛全息图(PSH)，这是一种新的计算全息图，用于产生分辨率为波长数量级的图像。PSH是通过合成多个光子筛来设计的。PSH具有简单的结构，由大小和深度相同的针孔组成，无需掩模和成像光学系统等其他光学元件即可直接生成图像。它有利于在高透过率和高数值孔径光学系统难以建立的紫外线和x射线波段产生图像。在这项研究中，我们介绍了一种稀疏光子筛来配置PSH，并描述了图像产生的原理和设计过程。我们还制作了PSHS，它可以产生直线图像和折线图像来演示相位可控性，并可以产生倾斜图像来生成三维图像。
We propose a photon-sieve hologram (PSH), a novel computer-generated hologram for generating an image with a resolution of the order of the wavelength. The PSH is designed by synthesising many photon sieves. The PSH has a simple structure that consists of pinholes with the same sizes and depths, and it directly generates images without other optical elements such as masks and imaging optical system. It is advantageous for image generation in ultraviolet and x-ray bands, where high-transmittance and high-numerical-aperture optical systems are difficult to build. In this study, we introduce a sparse photon sieve to configure the PSH and describe the principle of image generation and design procedure. We also fabricate PSHs that generate a line image and a broken-line image to demonstrate phase controllability, and skew images for three-dimensional image generation.