Title
Holographic nanodiamond–polymer composite grating with unprecedented slow-neutron refractive index modulation amplitude
Yuko Iso
Department of Engineering Science, University of Electro-Communications
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Abstract
We demonstrate exceptionally high slow-neutron diffraction efficiency (≈ 70% of transmitted intensity diffracted to the first order) from a holographic nanodiamond–polymer composite grating of only tens of micrometers thickness at the average neutron wavelength of 5.3 nm. By meticulous choice of materials for extreme refractive index modulation in a thin grating structure, we overcome typical wavelength and angular selectivity issues usually encountered when pursuing high diffraction efficiencies with a thick grating. This achievement paves the way for the implementation of flux-efficient diffractive elements, well-suited for polychromatic beams, and weakly collimated slow-neutron beams.
Keywords
Optical efficiencyDiamondNeutron scatteringOptical propertiesNanocompositesNeutron opticsDiffraction opticsGratingsHolographic optical elementsPolymers
Object type
Language
English [eng]
Persistent identifier
phaidra.univie.ac.at/o:2067027
Appeared in
Title
Applied Physics Letters
Volume
124
Issue
7
ISSN
0003-6951
Issued
2024
Publication
AIP Publishing
Version type
Date issued
2024
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Rights
Rights statement
© 2024 Author(s)
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