Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Klepp J"'
Publikováno v:
Optics Express (2021)
We experimentally demonstrate how to solve the phase problem of diffraction using multi-wave interference with standard diffraction experimental setups without the need for taking any auxiliary data. In particular, we show that the phases of the Four
Externí odkaz:
http://arxiv.org/abs/2011.06883
Autor:
Tomita, Y., Kageyama, A., Iso, Y., Umemoto, K., Kume, A., Liu, M., Pruner, C., Jenke, T., Roccia, S., Geltenbort, P., Fally, M., Klepp, J.
Publikováno v:
Phys. Rev. Applied 14, 044056 (2020)
We demonstrate the use of nanodiamond in constructing holographic nanoparticle-polymer composite transmission gratings with large saturated refractive index modulation amplitudes at both optical and slow-neutron wavelengths, resulting in efficient co
Externí odkaz:
http://arxiv.org/abs/2010.00645
Autor:
Blaickner, M., Demirel, B., Drevenšek-Olenik, I., Fally, M., Flauger, P., Geltenbort, P., Hasegawa, Y., Kurinjimala, R., Ličen, M., Pruner, C., Sponar, S., Tomita, Y., Klepp, J.
Nanocomposites enable us to tune parameters that are crucial for use of such materials for neutron-optics applications such as diffraction gratings by careful choice of properties such as species (isotope) and concentration of contained nanoparticles
Externí odkaz:
http://arxiv.org/abs/1804.07263
Ongoing fascination with quantum mechanics keeps driving the development of the wide field of quantum-optics, including its neutron-optics branch. Application of neutron-optical methods and, especially, neutron interferometry and polarimetry has a lo
Externí odkaz:
http://arxiv.org/abs/1407.2526
Publikováno v:
Appl. Phys. Lett. 101, 154104 (2012)
Diffraction of slow neutrons by nanoparticle-polymer composite gratings has been observed. By carefully choosing grating parameters such as grating thickness and spacing, a three-port beam splitter operation for cold neutrons - splitting the incident
Externí odkaz:
http://arxiv.org/abs/1205.3425
Publikováno v:
Appl. Phys. Lett. 100, 214104 (2012)
We report on successful tests of holographically arranged grating-structures in nanoparticle-polymer composites in the form of 100 microns thin free-standing films, i.e. without sample containers or covers that could cause unwanted absorption/incoher
Externí odkaz:
http://arxiv.org/abs/1203.5938
For holographic gratings recorded in superparamagnetic nanoparticle-polymer composites the diffraction efficiency should -- next to grating spacing, nanoparticle concentration and grating thickness -- depend on the strength of an external magnetic fi
Externí odkaz:
http://arxiv.org/abs/1201.6519
Autor:
Klepp, J., Pruner, C., Tomita, Y., Plonka-Spehr, C., Geltenbort, P., Ivanov, S., Manzin, G., Andersen, K. H., Kohlbrecher, J., Ellabban, M. A., Fally, M.
Publikováno v:
Phys. Rev. A84:013621,2011
Diffraction experiments with holographic gratings recorded in SiO$_2$ nanoparticle-polymer composites have been carried out with slow neutrons. The influence of parameters such as nanoparticle concentration, grating thickness and grating spacing on t
Externí odkaz:
http://arxiv.org/abs/1106.1362
Publikováno v:
Nucl.Instrum.Meth.A634:S59-S62,2011
The preparation of neutron-optical phase gratings with light-optical holography is reviewed. We compare the relevant concepts of i) Kogelnik's theory for Bragg diffraction of light by thick volume gratings, which can be used to analyze holographic gr
Externí odkaz:
http://arxiv.org/abs/1007.3407
Autor:
Sponar, S., Klepp, J., Durstberger-Rennhofer, K., Loidl, R., Filipp, S., Lettner, M., Bertlmann, R. A., Badurek, G., Rauch, H., Hasegawa, Y.
Publikováno v:
J. Phys. A: Math. Theor. 43, 354015 (2010)
Geometric phase phenomena in single neutrons have been observed in polarimeter and interferometer experiments. Interacting with static and time dependent magnetic fields, the state vectors acquire a geometric phase tied to the evolution within spin s
Externí odkaz:
http://arxiv.org/abs/1002.0040