2012 Fiscal Year Final Research Report
Holographic neutron optic devices for neutron-beam control
| Project/Area Number |
23656045
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
TOMITA Yasuo 電気通信大学, 大学院・情報理工学科, 教授 (50242342)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 光学素子 / フォトポリマー / ナノ微粒子 / 中性子ビーム |
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| Research Abstract |
In quest for the realization of holographic neutron-optical elements for neutron interferometers and focused small angle scattering apparatus at cold and very cold neutron wavelengths, we have clarified the neutron diffraction properties of volume plane-wave holograms recorded in photopolymerizable nanoparticle-polymer composites under holographic exposure at a green (532 nm) wavelength. We have also demonstrated the mirror operation with the 90 % diffraction efficiency at a very cold neutron wavelength of 4.1 nm by use of a free-standing nanoparticle-polymer composite film as well as the three-port-beam-splitter operation at a cold neutron wavelength of 1.7 nm with the 1:1:1 division ratio. As a result, we have shown the feasibility of photopolymerizable nanoparticle-polymer composites as holographic neutron-optical elements.
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