X-ray in-line holography is well suited for three-dimensional imaging, since it covers a large field of view without the necessity of scanning. However, its resolution does not extend to the range covered by coherent diffractive imaging or ptychography. In this work, we show full-field holographic x-ray imaging based on cone-beam illumination, beyond the resolution limit given by the cone-beam numerical aperture. Image information encoded in far-field diffraction and in holographic self-interference is treated in a common reconstruction scheme, without the usual empty beam correction step of in-line holography. An illumination profile tailored by waveguide optics and exactly known by prior probe retrieval is shown to be sufficient for solving the phase problem. The approach paves the way toward high-resolution and dose-efficient x-ray tomography, well suited for the current upgrades of synchrotron radiation sources to diffraction-limited storage rings.

中文翻译：

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具有亚 15 nm 分辨率的硬 X 射线在线全息术

X 射线在线全息术非常适合三维成像，因为它无需扫描即可覆盖大视野。然而，它的分辨率没有扩展到相干衍射成像或 ptychography 所涵盖的范围。在这项工作中，我们展示了基于锥形束照明的全视场全息 X 射线成像，超出了锥形束数值孔径给出的分辨率限制。在远场衍射和全息自干涉中编码的图像信息在常见的重建方案中处理，没有在线全息通常的空光束校正步骤。由波导光学设计并通过先前的探针检索准确知道的照明剖面被证明足以解决相位问题。该方法为高分辨率和剂量效率高的 X 射线断层扫描铺平了道路，