Experimental demonstration of a concave grating for spin waves in the Rowland arrangement

Abstract We experimentally demonstrate the operation of a Rowland-type concave grating for spin waves, with potential application as a microwave spectrometer. In this device geometry, spin waves are coherently excited on a diffraction grating and form an interference pattern that focuses spin waves...

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Autores principales:	Ádám Papp, Martina Kiechle, Simon Mendisch, Valentin Ahrens, Levent Sahin, Lukas Seitner, Wolfgang Porod, Gyorgy Csaba, Markus Becherer
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b96bd26c33aa40dd9c979cf34eb21de8
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spelling	oai:doaj.org-article:b96bd26c33aa40dd9c979cf34eb21de82021-12-02T16:14:56ZExperimental demonstration of a concave grating for spin waves in the Rowland arrangement10.1038/s41598-021-93700-z2045-2322https://doaj.org/article/b96bd26c33aa40dd9c979cf34eb21de82021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93700-zhttps://doaj.org/toc/2045-2322Abstract We experimentally demonstrate the operation of a Rowland-type concave grating for spin waves, with potential application as a microwave spectrometer. In this device geometry, spin waves are coherently excited on a diffraction grating and form an interference pattern that focuses spin waves to a point corresponding to their frequency. The diffraction grating was created by focused-ion-beam irradiation, which was found to locally eliminate the ferrimagnetic properties of YIG, without removing the material. We found that in our experiments spin waves were created by an indirect excitation mechanism, by exploiting nonlinear resonance between the grating and the coplanar waveguide. Although our demonstration does not include separation of multiple frequency components, since this is not possible if the nonlinear excitation mechanism is used, we believe that using linear excitation the same device geometry could be used as a spectrometer. Our work paves the way for complex spin-wave optic devices—chips that replicate the functionality of integrated optical devices on a chip-scale.Ádám PappMartina KiechleSimon MendischValentin AhrensLevent SahinLukas SeitnerWolfgang PorodGyorgy CsabaMarkus BechererNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ádám Papp Martina Kiechle Simon Mendisch Valentin Ahrens Levent Sahin Lukas Seitner Wolfgang Porod Gyorgy Csaba Markus Becherer Experimental demonstration of a concave grating for spin waves in the Rowland arrangement
description	Abstract We experimentally demonstrate the operation of a Rowland-type concave grating for spin waves, with potential application as a microwave spectrometer. In this device geometry, spin waves are coherently excited on a diffraction grating and form an interference pattern that focuses spin waves to a point corresponding to their frequency. The diffraction grating was created by focused-ion-beam irradiation, which was found to locally eliminate the ferrimagnetic properties of YIG, without removing the material. We found that in our experiments spin waves were created by an indirect excitation mechanism, by exploiting nonlinear resonance between the grating and the coplanar waveguide. Although our demonstration does not include separation of multiple frequency components, since this is not possible if the nonlinear excitation mechanism is used, we believe that using linear excitation the same device geometry could be used as a spectrometer. Our work paves the way for complex spin-wave optic devices—chips that replicate the functionality of integrated optical devices on a chip-scale.
format	article
author	Ádám Papp Martina Kiechle Simon Mendisch Valentin Ahrens Levent Sahin Lukas Seitner Wolfgang Porod Gyorgy Csaba Markus Becherer
author_facet	Ádám Papp Martina Kiechle Simon Mendisch Valentin Ahrens Levent Sahin Lukas Seitner Wolfgang Porod Gyorgy Csaba Markus Becherer
author_sort	Ádám Papp
title	Experimental demonstration of a concave grating for spin waves in the Rowland arrangement
title_short	Experimental demonstration of a concave grating for spin waves in the Rowland arrangement
title_full	Experimental demonstration of a concave grating for spin waves in the Rowland arrangement
title_fullStr	Experimental demonstration of a concave grating for spin waves in the Rowland arrangement
title_full_unstemmed	Experimental demonstration of a concave grating for spin waves in the Rowland arrangement
title_sort	experimental demonstration of a concave grating for spin waves in the rowland arrangement
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b96bd26c33aa40dd9c979cf34eb21de8
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Experimental demonstration of a concave grating for spin waves in the Rowland arrangement

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