Transition frequencies of the D lines of {sup 39}K, {sup 40}K, and {sup 41}K measured with a femtosecond laser frequency comb

Journal Article · Fri Sep 15 04:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.032503· OSTI ID:20857691

Falke, Stephan; Tiemann, Eberhard; Lisdat, Christian; Schnatz, Harald; Grosche, Gesine ^[1]

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1. Institut fuer Quantenoptik, Universitaet Hannover, Welfengarten 1, 30167 Hannover (Germany)

We report measurements of the transition frequencies 4s {sup 2}S{sub 1/2}-4p {sup 2}P{sub 1/2} and 4s {sup 2}S{sub 1/2}-4p {sup 2}P{sub 3/2} of the potassium isotopes 39, 40, and 41 through an atomic beam experiment with a fractional uncertainty of about 2x10{sup -10}. For frequency calibration, a fs-laser comb referenced to a Cs atomic clock was used. Compared to previous results, hyperfine constants for the states 4p {sup 2}P{sub 1/2} and 4p {sup 2}P{sub 3/2} and isotope shifts are given with a considerably reduced uncertainty. This paper also resolves the discrepancy of transition frequencies measured by Banerjee et al. [Phys. Rev. A 70, 052505 (2004)] and Scherf et al. [Z. Phys. D 36, 31 (1996)] and the hyperfine constant A({sup 39}K,{sup 2}P{sub 1/2}) reported by Banerjee et al. [Europhys. Lett. 65, 172 (2004)] and Bendali et al. [J. Phys. B 14, 4231 (1981)].

• OSTI ID: 20857691
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC BEAMS
BORON 14
CALIBRATION
HYPERFINE STRUCTURE
ISOTOPE EFFECTS
LASER RADIATION
LIFETIME
POTASSIUM 39
POTASSIUM 40
POTASSIUM 41
SPECTRAL SHIFT