Study of image reconstruction byphase retrieval with a synthetic aperture-array filter in wave fields of light and x-ray

在过去的十年里，无透镜相干衍射成像在X射线和电子成像领域引起了极大的关注。最近，我们提出了一种新的相干衍射成像方法，该方法使用带有孔径阵列滤光片的确定性位相恢复方法，允许从用滤光片测量的单个衍射光强度重建物体的模数和相位。在本研究中，通过在严格衍射和菲涅耳衍射近似条件下的光学波长的实验，证明了该方法的有效性。

Lensless coherent diffractive imaging has attracted considerable attention during the past decade in the fields of x-ray and electron imaging. Recently, we have proposed a novel method of coherent diffractive imaging using a deterministic phase-retrieval method with an aperture-array filter, which allows for the reconstructions of the modulus and the phase of an object from a single diffraction intensity measured with the filter. In this study, the effectiveness of our method has been demonstrated by the experiments at optical wavelengths under the conditions of the rigorous diffraction as well as the Fresnel diffraction approximation.