Kilohertz-resolution spectroscopy of cold atoms with an optical frequency comb

Details Kilohertz-resolution spectroscopy of cold atoms with an optical frequency comb Kilohertz-resolution spectroscopy of cold atoms with an optical frequency comb

2006-05-03

arxiv.org/abs/physics/0605034v1

Phys. Rev. Lett., 97, 163905 (2006)

Physics

Atomic Physics

4 pages, 4 Figures

Scientific paper

10.1103/PhysRevLett.97.163905

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 allows for two regimes of amplification, one in which many lines of the comb are amplified, and one where a single line 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.

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