Ultrafast Optomagnonics in Ferrimagnetic Multi-Sublattice Garnets

This review discusses the ultrafast magnetization dynamics within gigahertz to terahertz frequency range in ferrimagnetic rare-earth iron garnets with different substitutions. In these garnets, roles of spin–orbit and exchange interactions have been detected using femtosecond laser pulses via inverse Faraday effect. The all-optical control spin-wave Kaplan–Kittel resonance modes ranges is shown. Generation localization electric field distribution inside garnet through metal-bound surface plasmon-polariton strongly enhance amplitude modes. mode yttrium was observed circularly polarized Raman spectroscopy. results this study may be utilized development a wide class optomagnonic devices range.