Holographic nanodiamond-polymer composite grating with unprecedented slow-neutron refractive index modulation amplitude

Autor(en)

Elhoucine Hadden, Martin Fally, Yuko Iso, Tobias Jenke, Jürgen Klepp, Atsushi Kume, Koichi Umemoto, Yasuo Tomita

Abstrakt

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.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Universität Wien, Institut Laue-Langevin (ILL), The University of Electro-Communications, Daical Corporation

Journal

Applied Physics Letters

Band

124

Anzahl der Seiten

6

ISSN

0003-6951

DOI

https://doi.org/10.1063/5.0186753

Publikationsdatum

02-2024

Peer-reviewed

Ja

ÖFOS 2012

103021 Optik, 103023 Polymerphysik

ASJC Scopus Sachgebiete

Physics and Astronomy (miscellaneous)

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/efe35eb0-75cb-45ee-9c73-e95de399170b