title: Observation of optical spring effect in a microtoroidal optomechanical resonator.
abstract: We present experimental evidence of the optical spring effect in a silica microtoroid resonator. The variation of the measured mechanical resonant frequency as a function of optical power, optical coupling, and optical detuning is in very good agreement with a model for radiation-pressure-induced rigidity in a silica microtoroid.
authors.affiliation: Department of Applied Physics, California Institute of Technology, Pasadena 91125, USA. mhz@caltech.edu
authors.forename: Mani
authors.initials: M
authors.lastname: Hossein-Zadeh
authors.forename: Kerry J
authors.initials: KJ
authors.lastname: Vahala