title: Microresonator stabilized 2  μm distributed-feedback GaSb-based diode laser.
abstract: We report on the stabilization of a high-power distributed feedback (DFB) semiconductor laser operating at 2.05 μm wavelength, using a crystalline whispering gallery mode microresonator. The laser's frequency noise is measured to be below 100  Hz/Hz1/2at Fourier frequencies ranging from 10 Hz to 1 MHz. The instantaneous linewidth of the laser is improved by four orders of magnitude compared with the free-running DFB laser, and is measured to be 15 Hz at 0.1 ms measurement time. The integral linewidth approaches 100 Hz. The stabilized DFB laser is integrated with a polarization maintaining output fiber and an integrated optical isolator.
authors.forename: Elijah
authors.initials: E
authors.lastname: Dale
authors.forename: Mahmood
authors.initials: M
authors.lastname: Bagheri
authors.forename: Andrey B
authors.initials: AB
authors.lastname: Matsko
authors.forename: Clifford
authors.initials: C
authors.lastname: Frez
authors.forename: Wei
authors.initials: W
authors.lastname: Liang
authors.forename: Siamak
authors.initials: S
authors.lastname: Forouhar
authors.forename: Lute
authors.initials: L
authors.lastname: Maleki