title: Triple-Resonant Brillouin Light Scattering in Magneto-Optical Cavities.
abstract: An enhancement in Brillouin light scattering of optical photons with magnons is demonstrated in magneto-optical whispering gallery mode resonators tuned to a triple-resonance point. This occurs when both the input and output optical modes are resonant with those of the whispering gallery resonator, with a separation given by the ferromagnetic resonance frequency. The identification and excitation of specific optical modes allows us to gain a clear understanding of the mode-matching conditions. A selection rule due to wave vector matching leads to an intrinsic single-sideband excitation. Strong suppression of one sideband is essential for one-to-one frequency mapping in coherent optical-to-microwave conversion.
authors.affiliation: Hitachi Cambridge Laboratory, Cambridge CB3 0HE, United Kingdom.
authors.forename: J A
authors.initials: JA
authors.lastname: Haigh
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Nunnenkamp
authors.affiliation: Hitachi Cambridge Laboratory, Cambridge CB3 0HE, United Kingdom.
authors.forename: A J
authors.initials: AJ
authors.lastname: Ramsay
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom.
authors.forename: A J
authors.initials: AJ
authors.lastname: Ferguson