Phase and contrast moiré signatures in two-dimensional cone beam interferometry

Neutron interferometry has played a distinctive role in fundamental science and characterization of materials. Moiré neutron interferometers are candidate next-generation instruments: they offer microscopy-like magnification of the signal, enabling direct camera recording of interference patterns ac...

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Bibliographic Details
Published in:Physical review research 2024-09, Vol.6 (3), p.L032054, Article L032054
Main Authors: Sarenac, D., Gorbet, G., Clark, Charles W., Cory, D. G., Ekinci, H., Henderson, M. E., Huber, M. G., Hussey, D. S., Kapahi, C., Kienzle, P. A., Kim, Y., Long, A. M., Parker, J. D., Shinohara, T., Song, F., Pushin, D. A.
Format: Article
Language:English
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Summary:Neutron interferometry has played a distinctive role in fundamental science and characterization of materials. Moiré neutron interferometers are candidate next-generation instruments: they offer microscopy-like magnification of the signal, enabling direct camera recording of interference patterns across the full neutron wavelength spectrum. Here we demonstrate the extension of phase-grating moiré interferometry to two-dimensional geometries. Our fork-dislocation phase gratings reveal phase singularities in the moiré pattern, and we explore orthogonal moiré patterns with two-dimensional phase gratings. Our measurements of phase topologies and gravitationally induced phase shifts are in good agreement with theory. These techniques can be implemented in existing neutron instruments to advance interferometric analyses of emerging materials and precision measurements of fundamental constants.
ISSN:2643-1564
2643-1564
DOI:10.1103/PhysRevResearch.6.L032054