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Proceedings Paper

Lattice-based optical clock using an even isotope of Yb
Author(s): Zeb W. Barber; Chad W. Hoyt; Jason E. Stalnaker; Nathan Lemke; Chris W. Oates; Tara M Fortier; Scott Diddams; Leo Hollberg
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Paper Abstract

We describe progress toward an optical lattice clock based on an even isotope of Yb. The 1S03P0 clock resonance in 174Yb is accessed through a magnetically induced spectroscopic technique. Using ≈1mT static magnetic fields and ≈10 μW of probe light power we generate Rabi frequencies of several hertz. The narrow spectroscopic features that result (< 10 Hz FWHM) require a highly stabilized laser at the clock transition wavelength of 578 nm. We describe a new all solid-state laser system that shows hertz level stability. In order to cancel the slow drift of the cavity, spectroscopy is performed on the clock transition to provide feedback to the laser. Using a Ca neutral atom frequency standard as a reference oscillator,we show high stability and an effective method for investigating clock frequency shift systematics.

Paper Details

Date Published: 12 September 2007
PDF: 9 pages
Proc. SPIE 6673, Time and Frequency Metrology, 66730E (12 September 2007); doi: 10.1117/12.732215
Show Author Affiliations
Zeb W. Barber, National Institute of Standards and Technology (United States)
Univ. of Colorado, Boulder (United States)
Chad W. Hoyt, Bethel Univ. (United States)
Jason E. Stalnaker, National Institute of Standards and Technology (United States)
Nathan Lemke, National Institute of Standards and Technology (United States)
Univ. of Colorado, Boulder (United States)
Chris W. Oates, National Institute of Standards and Technology (United States)
Tara M Fortier, National Institute of Standards and Technology (United States)
Scott Diddams, National Institute of Standards and Technology (United States)
Leo Hollberg, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 6673:
Time and Frequency Metrology
R. Jason Jones, Editor(s)

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