Measurement of the 4S1/2→6S1/2 transition frequency in atomic potassium via direct frequency-comb spectroscopy

Measurement of the 4S1/2→6S1/2 transition frequency in atomic potassium via direct... We present an experimental determination of the 4S1/2→6S1/2 transition frequency in atomic potassium K39, using direct frequency-comb spectroscopy. The output of a stabilized optical frequency comb was used to excite a thermal atomic vapor. The repetition rate of the frequency comb was scanned and the transitions were excited using stepwise two-photon excitation. The center-of-gravity frequency for the transition was found to be νcog=822951698.09(13) MHz and the measured hyperfine A coefficient of the 6S1/2 state was 21.93(11) MHz. The measurements are in agreement with previous values and represent an improvement by a factor of 700 in the uncertainty of the center-of-gravity measurement. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

Measurement of the 4S1/2→6S1/2 transition frequency in atomic potassium via direct frequency-comb spectroscopy

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Measurement of the 4S1/2→6S1/2 transition frequency in atomic potassium via direct frequency-comb spectroscopy

Abstract

We present an experimental determination of the 4S1/2→6S1/2 transition frequency in atomic potassium K39, using direct frequency-comb spectroscopy. The output of a stabilized optical frequency comb was used to excite a thermal atomic vapor. The repetition rate of the frequency comb was scanned and the transitions were excited using stepwise two-photon excitation. The center-of-gravity frequency for the transition was found to be νcog=822951698.09(13) MHz and the measured hyperfine A coefficient of the 6S1/2 state was 21.93(11) MHz. The measurements are in agreement with previous values and represent an improvement by a factor of 700 in the uncertainty of the center-of-gravity measurement.
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Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1050-2947
eISSN
1094-1622
D.O.I.
10.1103/PhysRevA.96.012504
Publisher site
See Article on Publisher Site

Abstract

We present an experimental determination of the 4S1/2→6S1/2 transition frequency in atomic potassium K39, using direct frequency-comb spectroscopy. The output of a stabilized optical frequency comb was used to excite a thermal atomic vapor. The repetition rate of the frequency comb was scanned and the transitions were excited using stepwise two-photon excitation. The center-of-gravity frequency for the transition was found to be νcog=822951698.09(13) MHz and the measured hyperfine A coefficient of the 6S1/2 state was 21.93(11) MHz. The measurements are in agreement with previous values and represent an improvement by a factor of 700 in the uncertainty of the center-of-gravity measurement.

Journal

Physical Review AAmerican Physical Society (APS)

Published: Jul 5, 2017

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