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arXiv 2303.18166physics.opticseess.IVphysics.data-an
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使用自由电子激光产生的极紫外辐射进行三维相干衍射快照成像

Three-dimensional coherent diffraction snapshot imaging using extreme ultraviolet radiation from a free electron laser

Danny Fainozzi, Matteo Ippoliti, Fulvio Billè, Dario De Angelis, Laura Foglia, Claudio Masciovecchio, Riccardo Mincigrucci, Matteo Pancaldi, Emanuele Pedersoli,… 展开作者

Danny Fainozzi, Matteo Ippoliti, Fulvio Billè, Dario De Angelis, Laura Foglia, Claudio Masciovecchio, Riccardo Mincigrucci, Matteo Pancaldi, Emanuele Pedersoli, Christian M. Gunther, Bastian Pfau, Michael Schneider, Clemens Von Korff Schmising, Stefan Eisebitt, George Kourousias, Filippo Bencivenga, Flavio Capotondi

AI总结:

针对自由电子激光成像中传统断层扫描无法单次拍摄三维图像的问题,提出利用双极紫外脉冲同时照射物体产生独立衍射图样,结合相位恢复与光线追踪算法实现单次拍摄的三维立体成像,具备亚微米分辨率。

摘要:

以亚微米分辨率获取单个物体的三维表征,在从材料科学到临床诊断的众多领域至关重要。这通常通过断层扫描实现,即将同一物体在不同方向下捕获的多幅二维图像结合起来。然而,这种串行成像方法阻碍了自由电子激光成像实验中的单次拍摄获取。在本实验中,我们报告了一种使用极紫外辐射进行三维成像的新方法。该方法中,两个EUV脉冲同时从不同侧面照射孤立的3D物体,产生独立的相干衍射图样,从而通过相位恢复获得两个不同的二维视图。随后利用光线追踪算法,这些视图被用于获取3D重建。这种EUV立体成像方法类似于自然双眼视觉过程,提供亚微米空间分辨率和单次拍摄能力。此外,超快时间分辨率和光谱学可以轻松实现,向X射线波长的进一步扩展也值得期待。

英文摘要:

The possibility to obtain a three-dimensional representation of a single object with sub-$μ$m resolution is crucial in many fields, from material science to clinical diagnostics. This is typically achieved through tomography, which combines multiple two-dimensional images of the same object captured at different orientations. However, this serial imaging method prevents single-shot acquisition in imaging experiments at free electron lasers. In the present experiment, we report on a new approach to 3D imaging using extreme-ultraviolet radiation. In this method, two EUV pulses hit simultaneously an isolated 3D object from different sides, generating independent coherent diffraction patterns, resulting in two distinct bidimensional views obtained via phase retrieval. These views are then used to obtain a 3D reconstruction using a ray tracing algorithm. This EUV stereoscopic imaging approach, similar to the natural process of binocular vision, provides sub-$μ$m spatial resolution and single shot capability. Moreover, ultrafast time resolution and spectroscopy can be readily implemented, a further extension to X-ray wavelengths can be envisioned as well.

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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