Fortier, T.
, Le Coq, Y.
, Stalnaker, J.
, Ortega, D.
, Diddams, S.
, Oates, C.
and Hollberg, L.
(2006),
Kilohertz-level spectroscopy of cold atoms with a femtosecond optical frequency comb, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50351
(Accessed October 3, 2025)
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Kilohertz-level spectroscopy of cold atoms with a femtosecond optical frequency comb
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Author(s)
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Abstract
We have performed sub-Doppler spectroscopy on the narrow intercombination line of cold calcium atoms using the amplified output of a femtosecond laser frequency comb. Injection locking of a 657-nm diode laser with a femtosecond comb allowed for two regimes of amplification, one in which many teeth of the comb are amplified and one where a single tooth is predominantly amplified. The output of the laser in both regimes was used to perform kilohertz-level spectroscopy. This experiment demonstrates the potential for high-resolution absolute-frequency spectroscopy over the entire spectrum of the frequency comb output using a single high-finesse optical reference cavity.Citation
Physical Review Letters
Volume
97
Pub Type
Journals
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Created October 18, 2006, Updated October 12, 2021