Abstract
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 e ects. Time-resolved magneto-optical Kerr e ect 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 eld applied, allows determining saturation magnetization and damping factor. The magnetization-induced second harmonic generation e ect has been used for study of garnet lms. This method allows to determine crystallographic symmetry and hysteresis loops in an external magnetic eld at 2ω laser induced frequency. The simultaneous measurements of linear and second order magneto-optical e ects enable to investigate magnetic interfaces in the studied structures.
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