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A phase retrieval algorithm based on three-dimensionally translated diffraction patterns

: Loetgering, L.; Hammoud, R.; Juschkin, L.; Wilhein, T.


epl. A letters journal exploring the frontiers of physics 111 (2015), Nr.6, Art. 64002, 6 S.
ISSN: 0302-072X
ISSN: 0295-5075
ISSN: 1286-4854
Fraunhofer ILT ()

An iterative phase retrieval method is proposed that combines alternating projections and registration of three-dimensionally translated near-field diffraction patterns. This method allows to enhance resolution limited by a finite detector size and automatically stitches the assembled data while avoiding the need for a priori knowledge or scanning of the object as encountered in coherent diffraction imaging or ptychography.