Stabilized frequency comb with a self-referenced femtosecond Cr:forsterite laser

A frequency comb is generated with a Cr:forsterite femtosecond laser, spectrally broadened through a highly nonlinear optical fiber to span from $1.0\text{to}2.2\mu \mathrm{m}$, and stabilized using the $f\text{- to -}2f$ self-referencing technique. The repetition rate and the carrier-envelope offset frequency are stabilized to a hydrogen maser, calibrated by a cesium atomic fountain clock. Simultaneous frequency measurement of a $657\text{-}\mathrm{nm}$ cw laser by use of the stabilized frequency combs from this Cr:forsterite system and a Ti:sapphire laser agree at the ${10}^{-13}$ level. The frequency noise of the comb components is observed at 1064, 1314, and $1550\mathrm{nm}$ by comparing the measured beat frequencies between cw lasers and the supercontinuum frequency combs.