NDLI: Comparison of two single-ion optical frequency standards at the Hertz level

Content Provider	IEEE Xplore Digital Library
Author	Schneider, T. Tamm, C. Peik, E.
Copyright Year	2003
Description	Author affiliation: Physikalisch-Tech. Bundesanstalt, Braunschweig, Germany (Schneider, T.; Tamm, C.; Peik, E.)
Abstract	We describe experimental investigations of an optical frequency standard based on a single laser-cooled /sup 171/Yb/sup +/ ion confined in a radiofrequency Paul trap. The electric quadrupole transition from the /sup 2/S/sub 1/2 /(F=0) ground state to the /sup 2/D/sub 3/2/(F=2) state at 435.5 nm is used as the reference transition. The transition was resolved with a Fourier-limited width of approximately 30 Hz. In order to investigate the instability and accuracy of a future frequency standard based on the reference transition, a first experiment was done comparing two laser frequencies stabilized individually to two separate ions in different traps. As a result we found a relative frequency instability /spl sigma//sub y/(640 s)=1.5/spl middot/10/sup -15/ for the difference of the two laser frequencies. We also derived a first estimate /spl Theta/(/sup 2/D/sub 3/2/)=(3.9/spl plusmn/1.9)ea/sub 0//sup 2/ for the electric quadrupole moment of the /sup 2/D/sub 3/2/ state.
Sponsorship	IEEE Ultrasonics, Ferroelectrics, and Frequency Control Soc. Piezoelectric Devises Association
Starting Page	72
Ending Page	74
File Size	389384
Page Count	3
File Format	PDF
ISBN	0780376889
ISSN	10756787
DOI	10.1109/FREQ.2003.1274988
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Laser transitions Particle beam optics Optical harmonic generation Atom optics Spectroscopy Atomic measurements Clocks Cooling Laser excitation
Content Type	Text
Resource Type	Article

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