title: Probe retrieval in ptychographic coherent diffractive imaging.
abstract: Ptychography is a coherent diffractive imaging method that uses multiple diffraction patterns obtained through the scan of a localized illumination on the specimen. Until recently, reconstruction algorithms for ptychographic datasets needed the a priori knowledge of the incident illumination. A new reconstruction procedure that retrieves both the specimen's image and the illumination profile was recently demonstrated with hard X-ray data. We present here the algorithm in greater details and illustrate its practical applicability with a visible light dataset. Improvements in the quality of the reconstruction are shown and compared to previous reconstruction techniques. Implications for future applications with other types of radiation are discussed.
authors.affiliation: Paul Scherrer Institut, 5232 Villigen PSI, Switzerland. pierre.thibault@psi.ch
authors.forename: Pierre
authors.initials: P
authors.lastname: Thibault
authors.forename: Martin
authors.initials: M
authors.lastname: Dierolf
authors.forename: Oliver
authors.initials: O
authors.lastname: Bunk
authors.forename: Andreas
authors.initials: A
authors.lastname: Menzel
authors.forename: Franz
authors.initials: F
authors.lastname: Pfeiffer