学科建设

学术报告:Non-iterative diffraction imaging method using partially coherent illumination

报告题目: Non-iterative diffraction imaging method using partially coherent illumination

: Dr. Yifeng Shao, Optics Research Group, Delft University of Technology

报告时间:2017115日,下午12:30

报告地点:物理科技楼103

报告摘要:Coherent diffraction imaging (CDI) has particular importance for wavelengths at which no high quality and low price optical components are available, e.g. in the X-ray regime. In CDI one tries to reconstruct a complex-valued object from diffracted far field intensities. CDI requires complete coherent illumination of the object. However, current X-ray sources can only provide limited degree of coherence. Modifications of CDI using partially coherent illumination have been reported only for iterative methods and can adapt only limited deviation from the coherent illumination. In this talk, we will discuss the non-iterative approaches for diffraction imaging using partially coherent illumination. These approaches can reconstruct a complex-valued object when the coherence properties of the illumination are not known and can also determine the mutual coherence function of the illumination. 


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