Lin Huixiang, Xu Wenghui, Zhao Jiangtao, Zhang Fucai
Opt Lett. 2023 Aug 1;48(15):3977-3980. doi: 10.1364/OL.495706.
Coherent diffraction imaging (CDI) is an alternative way to achieve high-performance imaging without high-quality imaging lenses. Coherent modulation imaging (CMI) improves CDI's algorithmic convergence and applicability to general samples. A high degree of coherence of the source is essential for CDI, which limits its application to ultrafast pulsed sources with an intrinsically broad spectrum. Here, we propose an algorithm to increase the tolerance of CMI to low temporal coherence that tandemly employs the Wiener and Lucy deconvolution approaches. Simulations and visible light experiments demonstrate the effectiveness of our method. This work could pave the way for implementing CMI with attosecond pulsed lasers, laboratory x-ray sources, or electron microscopes.
相干衍射成像（CDI）是一种无需高质量成像透镜即可实现高性能成像的替代方法。相干调制成像（CMI）改善了CDI的算法收敛性及其对一般样品的适用性。光源的高度相干性对于CDI至关重要，这将其应用限制于具有固有宽光谱的超快脉冲光源。在此，我们提出一种算法，该算法串联采用维纳和露西反卷积方法来提高CMI对低时间相干性的耐受性。模拟和可见光实验证明了我们方法的有效性。这项工作可为利用阿秒脉冲激光、实验室X射线源或电子显微镜实现CMI铺平道路。
