Light and slow-neutron diffraction properties of holographic nanodiamond composite gratings

Author(s): Yasuo Tomita, Akihisa Kageyama, Yuko Iso, Koichi Umemoto, Jürgen Klepp, Christian Pruner, Martin Fally
Abstract: Photopolymerizable nanoparticle-polymer composite (NPC) is a photonic nanocomposite material consisting of photopolymer uniformly dispersed with nanoparticles (e.g., SiO₂ and ZrO₂) [1]. The distribution of dispersed nanoparticles can be manipulated holographically by light. This technique, the so-called holographic assembly of nanoparticles in polymer [2], enables us to perform the single step formation of large area photonic lattice structures for photonic applications such as holographic data storage, holographic diffractive elements and nonlinear optics [1]. Furthermore, we showed that holographic NPC gratings could control slow-neutron (cold and very cold neutron) beams for neutron interferometer [3]. Here we demonstrate for the first time the use of nanodiamonds (NDs), an intriguing allotrope of carbon [4], in NPCs to construct holographic NPC gratings with very large refractive index modulation amplitudes (Δn) and thus to efficiently control light and slow-neutron beams. This is possible because NDs have very high bulk refractive index at optical wavelengths and very large coherent and very small incoherent scattering cross sections with low absorption at slow-neutron wavelengths.
Organisation(s): Physics of Functional Materials
External organisation(s): The University of Electro-Communications, Daicel Corporation, Paris-Lodron Universität Salzburg
No. of pages: 1
DOI: https://doi.org/10.1109/CLEOE-EQEC.2019.8871791
Publication date: 06-2019
Austrian Fields of Science 2012: 103021 Optics, 103018 Materials physics
ASJC Scopus subject areas: Spectroscopy, Electronic, Optical and Magnetic Materials, Instrumentation, Atomic and Molecular Physics, and Optics, Computer Networks and Communications
Portal url: https://ucris.univie.ac.at/portal/en/publications/light-and-slowneutron-diffraction-properties-of-holographic-nanodiamond-composite-gratings(87a7817f-2416-457d-95b0-3077f3bacaf6).html