title: Extended ultrahigh-Q-cavity diode laser.
abstract: We report on a study of a 698 nm extended cavity semiconductor laser with intracavity narrowband optical feedback from a whispering gallery mode resonator. This laser comprises an ultrahigh-Q (>10(10)) resonator supporting stimulated Rayleigh scattering, a diffraction grating wavelength preselector, and a reflective semiconductor amplifier. Single longitudinal mode lasing is characterized with sub-kilohertz linewidth and a 9 nm coarse tuning range. The laser has a potential application for integration with the 1S0-3P0 strontium transition to create compact precision atomic clocks.
authors.forename: Zhenda
authors.initials: Z
authors.lastname: Xie
authors.forename: Wei
authors.initials: W
authors.lastname: Liang
authors.forename: Anatoliy A
authors.initials: AA
authors.lastname: Savchenkov
authors.forename: Jinkang
authors.initials: J
authors.lastname: Lim
authors.forename: Jan
authors.initials: J
authors.lastname: Burkhart
authors.forename: Mickey
authors.initials: M
authors.lastname: McDonald
authors.forename: Tanya
authors.initials: T
authors.lastname: Zelevinsky
authors.forename: Vladimir S
authors.initials: VS
authors.lastname: Ilchenko
authors.forename: Andrey B
authors.initials: AB
authors.lastname: Matsko
authors.forename: Lute
authors.initials: L
authors.lastname: Maleki
authors.forename: Chee Wei
authors.initials: CW
authors.lastname: Wong