Analytical expression of the magneto-optical Kerr effect and Brillouin light scattering intensity arising from dynamic magnetization

Jaroslav Hamrle (1, 2) , Jaromr Pištora (3) , Burkard Hillebrands (2) , Benjamin Lenk (4) , Markus Münzenberg (4)

1 Centre for Advanced Innovation Technology
2 Fachbereich Physik [Kaiserslautern]
3 Department of Physics
4 Institute of Physics

Time-resolved magneto-optical Kerr effect (MOKE) and Brillouin light scattering (BLS) spectroscopy are important techniques for the investigation of magnetization dynamics. Within this article, we calculate analytically the MOKE and BLS signals from prototypical spin-wave modes in the ferromagnetic layer. The reliability of the analytical expressions is confirmed by optically exact numerical calculations. Finally, we discuss the dependence of the MOKE and BLS signals on the ferromagnetic layer thickness.

Mots clés: 78.20.Ls; 75.30.Ds; 78.35.+c; 75.50.Cc

Jaroslav Hamrle, Jaromr Pištora, Burkard Hillebrands, Benjamin Lenk, Markus Münzenberg. Analytical expression of the magneto-optical Kerr effect and Brillouin light scattering intensity arising from dynamic magnetization. Journal of Physics D: Applied Physics, 2010, 43 (32), pp.325004. ⟨10.1088/0022-3727/43/32/325004⟩. ⟨hal-00569668⟩