Magnetization reversal by laser pulses

All-optical magnetization reversal by circularly polarized laser pulses: Experiment and multiscale modeling.
K. Vahaplar, A. M. Kalashnikova, A. V. Kimel, S. Gerlach, D. Hinzke, U. Nowak, R. Chantrell, A. Tsukamoto, A. Itoh, A. Kirilyuk, and Th. Rasing
Phys. Rev. B 85, 104402 (2012)

(a) The magnetization evolution in Gd24Fe66.5Co9.5 after the excitation with σ+ and σ− circularly polarized pulses
at room temperature. (b) The averaged magnetization in the switched areas (∼5 μm) after σ+ and σ− laser pulses. (c) and (d) are results of multimacrospin simulations.