School of Physics, The University of Melbourne, Victoria 3010, Australia.
Phys Rev Lett. 2009 Dec 11;103(24):243902. doi: 10.1103/PhysRevLett.103.243902.
The measured spatial coherence characteristics of the illumination used in a diffractive imaging experiment are incorporated in an algorithm that reconstructs the complex transmission function of an object from experimental x-ray diffraction data using 1.4 keV x rays. Conventional coherent diffractive imaging, which assumes full spatial coherence, is a limiting case of our approach. Even in cases in which the deviation from full spatial coherence is small, we demonstrate a significant improvement in the quality of wave field reconstructions. Our formulation is applicable to x-ray and electron diffraction imaging techniques provided that the spatial coherence properties of the illumination are known or can be measured.
在使用 1.4keV X 射线的实验中，我们将用于衍射成像实验的照明的测量空间相干特性纳入算法中，该算法可以根据实验 X 射线衍射数据重建物体的复透射函数。传统的完全空间相干的相干衍射成像是我们方法的一个限制情况。即使在偏离完全空间相干的情况很小的情况下，我们也证明了波场重建质量的显著提高。我们的公式适用于 X 射线和电子衍射成像技术，只要照明的空间相干特性是已知的或可以测量的。
