Open AccessBreaking ambiguities in mixed state ptychography
Author(s) -
Peng Li,
T. B. Edo,
Darren Batey,
J. M. Rodenburg,
Andrew Maiden
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.009038
Subject(s) - ptychography , optics , phase retrieval , object (grammar) , uniqueness , state (computer science) , physics , image formation , computer science , algorithm , computer vision , artificial intelligence , fourier transform , image (mathematics) , diffraction , mathematics , quantum mechanics , mathematical analysis
Recent advances in ptychographic imaging have shown how the technique extends naturally to mixed state experiments, for example when the illuminating radiation is partially coherent or when the object being imaged is laterally vibrating. To date, experiments using this mixed-state form of ptychography have relied on decomposition of the illumination 'probe' into multiple modes. In this paper we demonstrate, for the first time, ptychographic imaging with the simultaneous presence of both multiple probe and multiple object states. Our results prompt a discussion of uniqueness in the reconstructed images, and we show mathematically how ambiguities can arise. This leads us to extend the reconstruction process to include additional constraints that break these ambiguities, allowing interpretation of mixed object states that are not orthogonal.