Low noise, self-referenced all polarization maintaining Ytterbium fiber laser frequency comb

Abstract

We report the implementation of a self-referenced optical frequency comb generated by a passively mode-locked all polarization maintaining (PM) Yb fiber laser based on a nonlinear amplifying loop mirror (NALM). After spectral broadening the optical spectrum spans from 650 nm to 1400 nm, allowing for the generation of an optical octave and carrier envelope offset frequency (f_ceo) stabilization through a conventional f-2f interferometer. We demonstrate for the first time the stabilization of the f_ceo of such a PM Yb system with an in-loop fractional frequency stability scaled to an optical frequency of low 10^-19 at 1 second averaging time, offering a great potential for applications in optical atomic clock metrology.