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Ultrafast laser-induced control of magnetic materials
Opršal, Jakub ; Wojewoda, Ondřej (oponent) ; Arregi Uribeetxebarria, Jon Ander (vedoucí práce)
Magnetic materials are widely used for digital data storage. Data are written in form of bits using external magnetic field. It was long thought that magnetic materials could not be controlled faster than 10-100 ps. A breakthrough experiment in 1996 paved the way for a new field, showing that light can also controlled with femtosecond laser pulses and in the order of picoseconds. Here, we replicate fundamental laser-induced all-optical switching experiments in ferromagnetic and ferrimagnetic materials. Ultrafast laser setup was developed to perform such experiments with different light polarization. Thanks to this, we can distinguish different mechanism and different phenomena present for ultrafast control of magnetic materials.

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