title: Spectrally resolved optical probing of laser induced magnetization dynamics in bismuth iron garnet.
abstract: The spectrally resolved magnetization dynamics in bismuth iron garnet shows a fluence dependent light induced modification of the magneto-optical Faraday spectrum. It is demonstrated that the relative contributions from the tetrahedral and octahedral iron sites to the Faraday spectrum change due to the impact of the pump pulse. This change explains the observed deviation from a linear dependence of the amplitude of the oscillations on the fluence, as expected for the inverse Faraday effect.
authors.affiliation: Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
authors.forename: Benny
authors.initials: B
authors.lastname: Koene
authors.forename: Marwan
authors.initials: M
authors.lastname: Deb
authors.forename: Elena
authors.initials: E
authors.lastname: Popova
authors.forename: Niels
authors.initials: N
authors.lastname: Keller
authors.forename: Theo
authors.initials: T
authors.lastname: Rasing
authors.forename: Andrei
authors.initials: A
authors.lastname: Kirilyuk