Magnetization-induced optical third-harmonic generation in Co and Fe nanostructures
O.A. Aktsipetrov, E.M. Kim, R.V. Kapra, T.V. Murzina
TL;DR
This study reports the observation of magnetization-induced third-harmonic generation in Co and Fe nanostructures, revealing significantly enhanced magneto-optical effects compared to linear Kerr effects.
Contribution
It demonstrates the magnetization-induced third-harmonic generation in magnetic nanostructures and quantifies its enhanced magneto-optical contrast and phase shifts.
Findings
Magnetization-induced variations in MTHG exceed linear Kerr effects by at least an order of magnitude.
Maximum magnetic contrast in MTHG intensity reaches 0.2.
Polarization rotation angle for MTHG is up to 10 degrees.
Abstract
Magnetization-induced optical third-harmonic generation (MTHG) is observed in magnetic nanostructures: Co and Fe nanolayers and granular films containing Co nanoparticles. Magnetization-induced variations of the MTHG characteristics in these nanostructures exceed the typical values of linear magneto-optical Kerr effect by at least an order of magnitude: the maximum of magnetic contrast in the MTHG intensity is up to 0.2, the angle of polarization rotation for MTHG is 10 deg. and the relative phase shift is up to 100 deg.
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