title: Hybrid microspheres for nonlinear Kerr switching devices.
abstract: Electronic Kerr effect in a polyfluorene derivative is used to reversibly switch near infrared probe beam resonantly coupled to a hybrid polymer-silica microspherical resonator. NIR pumping at 780 nm in pulsed laser regime is used for non-linear switching of the WGM resonances that shift as much as 2 GHz for 50 mW of average pump power, compared to a shift of 250 MHz for the same average pump power at CW regime. The absence of temporal drift and the magnitude of this shift confirm the Kerr nature of the switching, ruling out thermooptical effects.
authors.affiliation: Department of Physics, Moscow State University, Moscow 119899, Russia.
authors.forename: Ilya
authors.initials: I
authors.lastname: Razdolskiy
authors.forename: Simone
authors.initials: S
authors.lastname: Berneschi
authors.forename: Gualtiero Nunzi
authors.initials: GN
authors.lastname: Conti
authors.forename: Stefano
authors.initials: S
authors.lastname: Pelli
authors.forename: Tatyana V
authors.initials: TV
authors.lastname: Murzina
authors.forename: Giancarlo C
authors.initials: GC
authors.lastname: Righini
authors.forename: Silvia
authors.initials: S
authors.lastname: Soria