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Kilohertz-level spectroscopy of cold atoms with a femtosecond optical frequency comb

Published

Author(s)

Tara Fortier, Yann Le Coq, Jason Stalnaker, Davi Ortega, Scott Diddams, Christopher W. Oates, Leo W. Hollberg

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

Citation

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 March 4, 2024)
Created October 18, 2006, Updated October 12, 2021