title: Theoretical and experimental investigation of broadband cascaded four-wave mixing in high-Q microspheres.
abstract: We analyze the process of cascaded four-wave mixing in a high-Q microcavity and show that under conditions of suitable cavity-mode dispersion, broadband frequency combs can be generated. We experimentally demonstrate broadband, cascaded four-wave mixing parametric oscillation in the anomalous group-velocity dispersion regime of a high-Q silica microsphere with an overall bandwidth greater than 200 nm.
authors.affiliation: School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA. iha2@cornell.edu
authors.forename: Imad H
authors.initials: IH
authors.lastname: Agha
authors.forename: Yoshitomo
authors.initials: Y
authors.lastname: Okawachi
authors.forename: Alexander L
authors.initials: AL
authors.lastname: Gaeta