Bibliographic Details
| Title: |
Tunable quasi-discrete spectrum of spin waves excited by periodic laser patterns. |
| Authors: |
Filatov, Ia. A.1 (AUTHOR) yaroslav.filatov@mail.ioffe.ru, Gerevenkov, P. I.1 (AUTHOR), Khokhlov, N. E.1 (AUTHOR), Kalashnikova, A. M.1 (AUTHOR) |
| Source: |
Journal of Applied Physics. 8/14/2024, Vol. 136 Issue 6, p1-11. 11p. |
| Subject Terms: |
*FARADAY effect, *FEMTOSECOND pulses, *MAGNETIC anisotropy, *GROUP velocity, *WAVE packets, *SPIN waves |
| Abstract: |
We present a concept for selective excitation of magnetostatic surface waves with a quasi-discrete spectrum using spatially patterned femtosecond laser pulses inducing either an ultrafast change of magnetic anisotropy or an inverse Faraday effect. We micromagnetically simulate the excitation of the waves with a periodically patterned uni- or bipolar laser impact. Such excitation yields multiple wavepackets propagating with different group velocities, whose dispersion corresponds to the set of quasi-discrete points. In addition, we show that the frequency of the spectral peaks can be controlled by the polarity of the periodic impact and its spatial period. The presented consideration of multiple spatially periodic magnetostatic surface wave sources as a whole enables implementation of a comprehensive toolkit of spatiotemporal optical methods for tunable excitation and control of spin-wave parameters. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Database: |
Academic Search Complete |
