title: Kerr optical frequency comb generation in strontium fluoride whispering-gallery mode resonators with billion quality factor.
abstract: We report the fabrication for the first time of a strontium fluoride (SrF(2)) whispering-gallery mode resonator with quality factor in excess of 1 billion. The millimeter-size disk-resonator is polished until the surface roughness decreases down to a root-mean square value of 1.2 nm, as measured with a vertical scanning profilometer. We also demonstrate that this ultrahigh Q resonator allows for the generation of a normal-dispersion Kerr optical frequency comb at 1550 nm.
authors.forename: Rémi
authors.initials: R
authors.lastname: Henriet
authors.forename: Guoping
authors.initials: G
authors.lastname: Lin
authors.forename: Aurélien
authors.initials: A
authors.lastname: Coillet
authors.forename: Maxime
authors.initials: M
authors.lastname: Jacquot
authors.forename: Luca
authors.initials: L
authors.lastname: Furfaro
authors.forename: Laurent
authors.initials: L
authors.lastname: Larger
authors.forename: Yanne K
authors.initials: YK
authors.lastname: Chembo