Dispositifs magnetooptiques en couches minces a accord de phase: Utilisation d'une double heteroepitaxie de grenats ferrimagnetiques

The use of a double heteroepitaxy of magnetic garnets to obtain quasi-phasematching in waveguiding experiments is reported here. At a wavelength of 1.152 μm, conversion efficiencies of more than 50% are easily achieved with two appropriate magnetic garnets layers of about 5 μm thickness each deposited on a GGG substrate. This method of quasi-phase-matching is applicable to non-magnetic materials.