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METHOD FOR PHASE RETRIEVAL TO REDUCE A SAMPLING REQUIREMENT WHEN IMAGING A DYNAMIC PROCESS

United States Patent Application

20180107160
A1
View the Complete Application at the US Patent & Trademark Office
A method for retrieving phase information in a coherent diffraction imaging process includes acquiring a plurality of 3D data sets, each 3D data set corresponding to one of a plurality of time states, and reconstructing a 3D image of the object at a given time state using the 3D data set from all of the time states. Each 3D data set is acquired by: illuminating an object positioned in a first position with a coherent beam; measuring a first 2D diffraction pattern using an area detector; rotating the object around a tilt axis thereof to a second position that is different from the first position; re-illuminating the object positioned in the second position with the coherent beam; re-measuring a second 2D diffraction pattern using the area detector; and repeating the rotating, re-illuminating and re-measuring steps such that each 3D data set includes a predetermined number of diffraction patterns.
Ulvestad, Andrew P. (Lemont, IL), Hruszkewycz, Stephan O. (Chicago, IL), Fuoss, Paul H. (Oak Park, IL), Wild, Stefan M. (Downers Grove, IL), Tripathi, Ashish (Lemont, IL)
15/ 294,314
October 14, 2016
STATEMENT OF GOVERNMENT INTEREST [0001] The United States Government claims certain rights in this invention pursuant to Contract No. DE-AC02-06CH11357 between the U.S. Department of Energy and UChicago Argonne, LLC, as operator of Argonne National Laboratories.