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

Journal Article · Thu Apr 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.043840· OSTI ID:21408734

Stalnaker, Jason E ^[1]; Mbele, Vela ^[2]; Gerginov, Vladislav; Fortier, Tara M; Diddams, Scott A; Hollberg, Leo ^[3]; Tanner, Carol E ^[4]

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1. Department of Physics and Astronomy, Oberlin College, 110 N. Professor St., Oberlin, OH 44074 (United States)
2. Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway MS 847, Boulder, CO 80305 (United States) and School of Physics, University of Witwatersrand, Private Bag 3, WITS, 2050, RSA
3. Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway MS 847, Boulder, CO 80305 (United States)
4. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556-5670 (United States)

We report measurements of absolute transition frequencies and hyperfine coupling constants for the 8S{sub 1/2}, 9S{sub 1/2}, 7D{sub 3/2}, and 7D{sub 5/2} states in {sup 133}Cs vapor. The stepwise excitation through either the 6P{sub 1/2} or 6P{sub 3/2} intermediate state is performed directly with broadband laser light from a stabilized femtosecond laser optical-frequency comb. The laser beam is split, counterpropagated, 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 7P{sub 1/2,3/2{yields}}6S{sub 1/2} branches 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 of transition frequencies and hyperfine coupling constants that are in agreement with other recent measurements for the 8S state and provide improvement by 2 orders of magnitude over previously published results for the 9S and 7D states.

• OSTI ID: 21408734
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
BEAMS
CESIUM
CESIUM 133
CESIUM ISOTOPES
COUPLING CONSTANTS
DECAY
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FILTERS
FLUIDS
FLUORESCENCE
GASES
INTERFERENCE
INTERMEDIATE MASS NUCLEI
INTERMEDIATE STATE
ISOTOPES
LASERS
LEAST SQUARE FIT
LUMINESCENCE
MATHEMATICAL SOLUTIONS
MAXIMUM-LIKELIHOOD FIT
METALS
NONLINEAR PROBLEMS
NUCLEI
NUMERICAL SOLUTION
ODD-EVEN NUCLEI
PHOTON EMISSION
RADIATIONS
STABLE ISOTOPES
VAPORS
VISIBLE RADIATION