title: Optical frequency conversion in silica-whispering-gallery-mode microspherical resonators.
abstract: High quality factor whispering-gallery-mode microresonators are ideally suited for nonlinear optical interactions. We analyze, experimentally and theoretically, a variety of χ((3)) nonlinear interactions in silica microspheres, consisting of third harmonic generation and Raman assisted third order sum-frequency generation in the visible. A tunable, room temperature, cw multicolor emission in silica microspherical whispering-gallery-mode microresonators has been achieved by controlling the cavity mode dispersion and exciting nonequatorial modes for efficient frequency conversion.
authors.affiliation: IFAC-CNR Institute of Applied Physics "N. Carrara", Miplab, Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy and Centro Studi e Ricerche "E. Fermi", P. Del Viminale 2, 00184 Rome, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Farnesi
authors.affiliation: IFAC-CNR Institute of Applied Physics "N. Carrara", Miplab, Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy.
authors.forename: A
authors.initials: A
authors.lastname: Barucci
authors.affiliation: IFAC-CNR Institute of Applied Physics "N. Carrara", Miplab, Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy and Centro Studi e Ricerche "E. Fermi", P. Del Viminale 2, 00184 Rome, Italy.
authors.forename: G C
authors.initials: GC
authors.lastname: Righini
authors.affiliation: IFAC-CNR Institute of Applied Physics "N. Carrara", Miplab, Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy.
authors.forename: S
authors.initials: S
authors.lastname: Berneschi
authors.affiliation: IFAC-CNR Institute of Applied Physics "N. Carrara", Miplab, Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy.
authors.forename: S
authors.initials: S
authors.lastname: Soria
authors.affiliation: IFAC-CNR Institute of Applied Physics "N. Carrara", Miplab, Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy.
authors.forename: G
authors.initials: G
authors.lastname: Nunzi Conti
mesh_terms: D008863:Microspheres; D017711:Nonlinear Dynamics; D055095:Optics and Photonics / Q000295:instrumentation / Q000379:methods*; D012822:Silicon Dioxide / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000295:instrumentation / Q000379:methods
chemical_list: D012822:Silicon Dioxide