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Neutron optics

Light optical holography is employed to fabricate grating structures for (very) cold neutrons employing the photo-neutron-refractive effect.

These light induced structures are used for diffracting neutrons.  Gratings are recorded in photopolymers, photorefractive electro-optic crystals, and polymer-liquid crystal composites or polymer nanoparticle composites. Gratings for (very) cold neutrons nowadays can be designed to serve as 3-port or 2-port beam-splitter and as a mirror.

Another major topic relying on the fabrication of light-induced gratings for neutrons is an interferometer for cold neutrons. Such a device was set up and successfully run at various beamlines in France, Germany and Switzerland.

For details see also: http://www.neutroninterferometry.com/

Beam splitter for cold neutrons
Beam splitter (Phys. Rev. Lett. 2010)
Diffraction geometry
3-port beam splitter (Appl. Phys. Lett. 2012)
Zernike interferometer
Physics of Functional Materials
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