Open AccessQuantitative single-shot imaging of complex objects using phase retrieval with a designed periphery
Author(s) -
Alexander Jesacher,
Walter Harm,
Stefan Bernet,
Monika RitschMarte
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.005470
Subject(s) - phase retrieval , optics , computer science , holography , interferometry , phase (matter) , transmission (telecommunications) , image plane , computer vision , single shot , constraint (computer aided design) , convergence (economics) , artificial intelligence , algorithm , physics , image (mathematics) , fourier transform , mathematics , telecommunications , geometry , quantum mechanics , economics , economic growth
Measuring transmission and optical thickness of an object with a single intensity recording is desired in many fields of imaging research. One possibility to achieve this is to employ phase retrieval algorithms. We propose a method to significantly improve the performance of such algorithms in optical imaging. The method relies on introducing a specially designed phase object into the specimen plane during the image recording, which serves as a constraint in the subsequent phase retrieval algorithm. This leads to faster algorithm convergence and improved final accuracy. Quantitative imaging can be performed by a single recording of the resulting diffraction pattern in the camera plane, without using lenses or other optical elements. The method allows effective suppression of the "twin-image", an artefact that appears when holograms are read out. Results from numerical simulations and experiments confirm a high accuracy which can be comparable to that of phase-stepping interferometry.