A phase retrieval algorithm based on three-dimensionally translated diffraction patterns
1 Institute for X-Optics, RheinAhrCampus Remagen - Joseph-Rovan-Allee 2, 53424 Remagen, Germany
2 Chair for Experimental Physics of EUV, RWTH Aachen University - Steinbachstrasse 15, 52074 Aachen, Germany
Received: 3 June 2015
Accepted: 11 September 2015
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.
PACS: 42.30.Rx – Phase retrieval / 42.30.Kq – Fourier optics
© EPLA, 2015