Femtosecond frequency comb measurement of absolute frequencies and hyperfine coupling constants in cesium vapor

Published

April 29, 2010

Author(s)

Jason Stalnaker, Vela Mbele, Vladislav Gerginov, Tara Fortier, Scott Diddams, Leo Hollberg, C E. Tanner

Abstract

We report measurements of absolute transition frequencies and hyperfine coupling constants for the 8S1/2 , 9S1/2 , 7D3/2 , and 7D5/2 states in 133 Cs vapor. The stepwise excitation through either the 6P1/2 or 6P3/2 intermediate state is performed directly with broadband laser light from a stabilized femtosecond laser optical-frequency comb. The laser beam is split, counter-propagated and focused into a room-temperature Cs vapor cell. The repetition rate of the frequency comb is scanned and we detect the fluorescence on the 7P1/2,3/2 → 6S1/2 branch of the decay of the excited states. The excitations to the different states are isolated by the introduction of narrow bandwidth interference filters in the laser beam paths. Using a nonlinear least squares method we find measurements that are in agreement with other recent measurements for the 8S state and provide a two-order of magnitude improvement over previously published results for the 9S and 7D states.

Citation

Physical Review A (Atomic, Molecular and Optical Physics)

Volume

81

Pub Type

Journals

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Keywords

cesium, frequency measurement, optical frequency comb, atomic spectroscopy

Citation

Stalnaker, J. , Mbele, V. , Gerginov, V. , Fortier, T. , Diddams, S. , Hollberg, L. and Tanner, C. (2010), Femtosecond frequency comb measurement of absolute frequencies and hyperfine coupling constants in cesium vapor, Physical Review A (Atomic, Molecular and Optical Physics), [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904617 (Accessed October 15, 2024)