Magnetization-induced second harmonic generation enhanced by surface plasmons in Au/Co/Au ultrathin films

Gilles Tessier (1) , C. Malouin (1) , Patrick Georges (1) , Alain Brun (1) , D. Renard (1) , V. V. Pavlov (2) , P. Meyer (3) , J. Ferre (3) , Pierre Beauvillain (4)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Elsa
2 A.F. Ioffe Physical-Technical Institute
3 LPS - Laboratoire de Physique des Solides
4 IEF - Institut d'électronique fondamentale

Magnetization-induced second-harmonic generation near the surface plasmon resonance in an ultrathin Au/Co/Au structure has been investigated. The resonant coupling of surface plasmons at the fundamental frequency results in a strong enhancement and sign reversal of the nonlinear magneto-optical effects. Model calculations of the observed phenomena are given on the basis of a nonlocal field theory which permits the different interface contributions to the nonlinear polarization P(2ω) to be distinguished.

Domaines: Optique [physics.optics]

Gilles Tessier, C. Malouin, Patrick Georges, Alain Brun, D. Renard, et al.. Magnetization-induced second harmonic generation enhanced by surface plasmons in Au/Co/Au ultrathin films. Applied Physics B - Laser and Optics, 1999, 68 (3), pp.545-548. ⟨10.1007/s003400050663⟩. ⟨hal-00761550⟩