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Publication Citation: Optical frequency stabilization of a 10 GHz Ti:sapphire frequency comb by saturated absorption spectroscopy in 87Rubidium

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Author(s): Dirk Heinecke; Albrecht Bartels; Tara M. Fortier; Danielle Braje; Leo Hollberg; Scott A. Diddams;
Title: Optical frequency stabilization of a 10 GHz Ti:sapphire frequency comb by saturated absorption spectroscopy in 87Rubidium
Published: November 04, 2009
Abstract: The high power per mode of a recently-developed 10 GHz femtosecond Ti:sapphire frequency comb permits nonlinear Doppler-free saturation spectroscopy in 87Rubidium with a single mode of the comb. We use this access to the natural linewidth of the Rubidium D2 line to effectively stabilize the optical frequencies of the comb with precision of 7 10-12 in 1 second of averaging. The repetition rate is stabilized to a microwave reference. The stability of the 10 GHz comb is characterized using optical heterodyne with an independent self-referenced 1 GHz comb. In addition, we present alternative stabilization approaches for high repetition rate frequency combs and evaluate their expected stabilities.
Citation: Physical Review A (Atomic, Molecular and Optical Physics)
Volume: 80
Pages: 7 pp.
Keywords: femtosecond laser frequency comb;high repetition comb;saturation spectroscopy;stabilization
Research Areas: Physics, Laser Physics, Time and Frequency
PDF version: PDF Document Click here to retrieve PDF version of paper (474KB)