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This article is cited in 2 scientific papers (total in 2 papers)
Magnetism
Magnetization dynamics in epitaxial films induced by femtosecond optical pulses near the absorption edge
I. V. Savochkina, M. A. Kozhaevbc, A. I. Chernovbc, A. N. Kuz'michevbd, A. K. Zvezdinbcd, V. I. Belotelovab a Lomonosov Moscow State University
b International Center for Quantum Optics and Quantum Technologies (the Russian Quantum Center), Moscow, Skolkovo
c Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
d Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region
Abstract:
Peculiarities of the magnetization dynamics induced in iron garnet films by laser pulses with a frequency detuning near the absorption edge have been studied experimentally. It has been found that the dependence of the observed signal amplitude on the pumping energy becomes nonmonotonic with an increase in the pumping frequency. At the same time, the pumping energy corresponding to the maximum amplitude of the signal and this maximum signal amplitude decrease. Moreover, the signal amplitude starts to decrease with an increase in the pumping energy at frequencies within the absorption band. The observed phenomena are possibly caused by generation of magnetostatic spin waves and the effect of ultrafast optically induced demagnetization.
Received: 26.10.2016
Citation:
I. V. Savochkin, M. A. Kozhaev, A. I. Chernov, A. N. Kuz'michev, A. K. Zvezdin, V. I. Belotelov, “Magnetization dynamics in epitaxial films induced by femtosecond optical pulses near the absorption edge”, Fizika Tverdogo Tela, 59:5 (2017), 883–887; Phys. Solid State, 59:5 (2017), 904–908
Linking options:
https://www.mathnet.ru/eng/ftt9576 https://www.mathnet.ru/eng/ftt/v59/i5/p883
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