Absolute frequency measurements with a stabilized near-infrared optical frequency comb from a Cr:forsterite laser

Published

February 15, 2004

Author(s)

Kristan L. Corwin, I Thomann, A Bartels, Tasshi Dennis, W. Fox, William C. Swann, E. A. Curtis, C. W. Oates, G Wilpers, Sarah L. Gilbert, Leo W. Hollberg, Nathan R. Newbury, Scott A. Diddams, Jeffrey W. Nicholson, M. Yan

Abstract

A frequency comb is generated with a chromium-doped forsterite femtosecond laser, spectrally broadened in dispersion-shifted highly nonlinear fiber, and stabilized. The resultant evenly spaced comb of frequencies ranges from 1.1 to beyond 1.8 υm. The frequency comb was referenced simultaneously to the National Institute of Standards and Technology's optical frequency standard based on neutral calcium and to a hydrogen maser that is calibrated by a cesium atomic fountain clock. With this comb, we measured two frequency references in the telecommunications band: one half the frequency of the d/f crossover transition in ⁸⁷Rb at 780 nm, and the methane Ņ₂ + 2Ņ₃ R(8) line at 1315 nm.

Citation

Optics Letters

Volume

29

Issue

4

Pub Type

Journals

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Keywords

fiber optics, Molecular Spectroscopy, nonlinear optics, Supercontinuum generation

Citation

Corwin, K. , Thomann, I. , Bartels, A. , Dennis, T. , Fox, W. , Swann, W. , Curtis, E. , Oates, C. , Wilpers, G. , Gilbert, S. , Hollberg, L. , Newbury, N. , Diddams, S. , Nicholson, J. and Yan, M. (2004), Absolute frequency measurements with a stabilized near-infrared optical frequency comb from a Cr:forsterite laser, Optics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=31453 (Accessed October 27, 2025)