Néel domain wall as a tunable filter for optically excited magnetostatic waves

Khokhlov, N. E.; Khramova, A. E.; Филатов, И. А.; Gerevenkov, P. I.; Klinskaya, B.A.; Kalashnikova, A.M.

doi:10.1016/j.jmmm.2021.168018

Cited by 8 publications

(2 citation statements)

References 55 publications

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“…The described practical purposes a) yaroslav.filatov@mail.ioffe.ru; http://www.ioffe.ru/ferrolab/ of magnonics require appropriate research tools to inspect the wave nature of SWs. Recently, ultrafast laser pulses were introduced as such a tool because they can excite SWs with exceptional tunability 16,[20][21][22][23][24][25] . However, laser excitation is intrinsically broad-band and inhomogenious, which has a significant effect on the properties of the generated SW packets, limiting their spatial and temporal profile and leading to large spectral width.…”

mentioning

confidence: 99%

Spectrum evolution and chirping of laser-induced spin wave packets in thin iron films

Филатов

Gerevenkov

Wang

et al. 2022

Applied Physics Letters

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We present an experimental study of ultrafast optical excitation of magnetostatic surface spin wave (MSSW) packets and their spectral properties in thin films of pure iron. As the packets leave the excitation area and propagate in space, their spectra evolve non-trivially. Particularly, low or high frequency components are suppressed at the border of the excitation area depending on the orientation of the external magnetic field with respect to the magnetocrystalline anisotropy axes of the film. The effect is ascribed to the ultrafast local heating of the film. Furthermore, the time resolution of the implemented all-optical technique allows us to extract the chirp of the MSSW packet in the time domain via wavelet analysis. The chirp is a result of the group velocity dispersion of the MSSW and, thus, is controlled by the film's magnetic parameters, magnetization and anisotropy, and external field orientation. The demonstrated tunable modulation of MSSW wave packets with femtosecond laser pulses may find application in future magnonic-photonic hybrid devices for wave-based data processing.

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mentioning

confidence: 99%

Spectrum evolution and chirping of laser-induced spin wave packets in thin iron films

Филатов

Gerevenkov

Wang

et al. 2022

Applied Physics Letters

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show abstract

“…The described practical purposes of magnonics require appropriate research tools to excite and inspect the wave nature of SWs. Recently, ultrafast laser pulses were introduced as such tool because a) yaroslav.filatov@mail.ioffe.ru; http://www.ioffe.ru/ferrolab/ they can excite SW with exceptional tunability 10,[13][14][15][16][17][18] . However, laser excitation is intrinsically broad-band and inhomogenious, which has a significant effect on the properties of the generated SW packets, limiting the spatial and temporal profile and leading to large spectral width.…”

mentioning

confidence: 99%

Spectrum evolution and chirping of laser-induced spin wave packets in thin iron films

Filatov,

Gerevenkov,

Wang

et al. 2021

Preprint

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We present the experimental study of ultrafast optical excitation of surface magnetostatic spin wave (MSSW) packets and their spectral properties in thin films of pure iron. As the packets leave the excitation area and propagate in space, their spectra evolve non-trivially. Particularly, low or high frequency components are suppressed at the border of the excitation area depending on the orientation of the external magnetic field with respect to the magnetocrystolline anisotropy axes of the film. The effect is ascribed to the ultrafast local heating of the film. Further, the time resolution of the implemented all-optical technique allows us to extract the chirp of the MSSW packet in the time domain via wavelet analysis. The chirp is a result of the group velocity dispersion of the MSSW and, thus, is controlled by the film magnetic parameters, magnetization and anisotropy, and external field orientation. The demonstrated tunable modulation of MSSW wave packets with femtosecond laser pulses may find application in future magnonic-photonic hybrid devices for wave-based data processing.

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Spatial asymmetry of optically excited spin waves in anisotropic ferromagnetic film

Khokhlov,

Filatov,

Kalashnikova

2024

Journal of Magnetism and Magnetic Materials

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Néel domain wall as a tunable filter for optically excited magnetostatic waves

Cited by 8 publications

References 55 publications

Spectrum evolution and chirping of laser-induced spin wave packets in thin iron films

Spectrum evolution and chirping of laser-induced spin wave packets in thin iron films

Spectrum evolution and chirping of laser-induced spin wave packets in thin iron films

Spatial asymmetry of optically excited spin waves in anisotropic ferromagnetic film

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