Ultrafast Magneto-Optical and Magnetization-Induced Second Harmonic Generation Techniques for Studies of Magnetic Nanostructures

• Authors: A. Bonda , S. Uba , L. Uba
• Languages of publication: EN

Abstracts

EN

The work concerns application of titanium-sapphire femtosecond laser oscillator with 82 MHz repetition rate at 800 nm in measurements of ultrafast magneto-optical and magnetization-induced second harmonic generation effects. Time-resolved magneto-optical Kerr effect pump-probe method was used in investigation of ultrafast precession of magnetization in Fe/Au multilayers. Magnetization precession frequency, obtained as a function of magnetic field applied, allows determining saturation magnetization and damping factor. The magnetization-induced second harmonic generation effect has been used for study of garnet films. This method allows to determine crystallographic symmetry and hysteresis loops in an external magnetic field at 2 ω laser induced frequency. The simultaneous measurements of linear and second order magneto-optical effects enable to investigate magnetic interfaces in the studied structures.

Keywords

EN

06.60.Jn; 78.47.J-; 42.65.Re; 75.50.-y

Discipline

• 75.50.-y: Studies of specific magnetic materials
• 06.60.Jn: High-speed techniques (microsecond to femtosecond)
• 78.47.J-: Ultrafast spectroscopy (<1>(see also 42.65.Re Ultrafast processes; optical pulse generation and pulse compression; 82.53.Mj Femtosecond probing of semiconductor nanostructures)
• 42.65.Re: Ultrafast processes; optical pulse generation and pulse compression(for ultrafast spectroscopy, see 78.47.J-; for ultrafast magnetization dynamics, see 75.78.Jp)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1225-1227

Dates

published

2012-05

Contributors

author

A. Bonda

• Institute of Computer Science, University of Białystok, Lipowa 41, PL-15-424 Białystok, Poland

author

S. Uba

• Institute of Computer Science, University of Białystok, Lipowa 41, PL-15-424 Białystok, Poland

author

L. Uba

• Institute of Computer Science, University of Białystok, Lipowa 41, PL-15-424 Białystok, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.121.1225