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Compression gain of spin wave signals in a magnonic YIG waveguide with thermal non-uniformity
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2015 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 377, 1-5 p.Article in journal (Refereed) Published
Abstract [en]

We report on the observation of the compression gain of the signals carried by surface spin waves (MSSWs) in yittrium iron garnet films as a result of non-uniform optical heating of the spin wave medium. Efficient gain takes place if a frequency downshift of the spin wave spectrum induced by the heating is compensated by the corresponding non-uniformity of the bias magnetic field. It is proposed that the effect can be understood in part as an interaction between spin waves and a thermally induced potential well in the sample.

Place, publisher, year, edition, pages
2015. Vol. 377, 1-5 p.
Keyword [en]
Magnonics, Pulse compression, Spin wave, YIG
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-158255DOI: 10.1016/j.jmmm.2014.10.001ISI: 000345683200001Scopus ID: 2-s2.0-84908272792OAI: oai:DiVA.org:kth-158255DiVA: diva2:776213
Funder
Swedish Research Council, 2012-6142
Note

QC 20150107

Correction In Journal of Magnetism and Magnetic Materials,Volume 409, 1 July 2016, Pages 163–165, doi:10.1016/j.jmmm.2016.02.039, WOS:000372320300026

Available from: 2015-01-07 Created: 2015-01-07 Last updated: 2017-12-05Bibliographically approved

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