Improved stabilization of a 1.3 um femtosecond optical frequency comb using spectrally tailored continuum from a nonlinear fiber grating

Published

January 15, 2006

Author(s)

Kyoungsik Kim, Leo W. Hollberg, Scott A. Diddams, P. S. Westbrook, Jeffrey W. Nicholson

Abstract

We report the significant enhancement ($+$24 dB) of the optical beat note between a 657-nm cw laser and the second-harmonic generation of the tailored continuum at 1314 nm generated with a femtosecond Cr:forsterite laser and a nonlinear fiber Bragg grating. The same continuum is used to stabilize the carrier envelope offset frequency of the Cr:forsterite femtosecond laser and permits an improved optical stabilization of the frequency comb from 1.0 to 2.2 um. Using a common optical reference at 657 nm, a relative fractional frequency instability of 2.0 x 10^{-15}$ is achieved between the repetition rates of Cr:forsterite and Ti:sapphire laser systems in 10-s averaging time. The fractional frequency offset between the optically stabilized frequency combs of the Cr:forsterite and Ti:sapphire lasers is (0.024 +- 6.1) x 10^u{-17}.

Citation

Optics Letters

Volume

31

Issue

2

Pub Type

Journals

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Keywords

Cr:forsterite, fiber Bragg grating, fractional offset, optical frequency comb stabilization, Ti:sapphire femtosecond laser, total deviation

Citation

Kim, K. , Hollberg, L. , Diddams, S. , Westbrook, P. and Nicholson, J. (2006), Improved stabilization of a 1.3 um femtosecond optical frequency comb using spectrally tailored continuum from a nonlinear fiber grating, Optics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50193 (Accessed October 3, 2025)