Lattice-based optical clock using an even isotope of Yb

Zeb W. Barber; Chad W. Hoyt; Jason E. Stalnaker; Nathan Lemke; Chris W. Oates; Tara M Fortier; Scott Diddams; Leo Hollberg

doi:10.1117/12.732215

12 September 2007 Lattice-based optical clock using an even isotope of Yb

Zeb W. Barber, Chad W. Hoyt, Jason E. Stalnaker, Nathan Lemke, Chris W. Oates, Tara M Fortier, Scott Diddams, Leo Hollberg

Author Affiliations +

Proceedings Volume 6673, Time and Frequency Metrology; 66730E (2007) https://doi.org/10.1117/12.732215
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

We describe progress toward an optical lattice clock based on an even isotope of Yb. The ¹S₀ → ³P₀ 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.

Citation Download Citation

Zeb W. Barber, Chad W. Hoyt, Jason E. Stalnaker, Nathan Lemke, Chris W. Oates, Tara M Fortier, Scott Diddams, and Leo Hollberg "Lattice-based optical clock using an even isotope of Yb", Proc. SPIE 6673, Time and Frequency Metrology, 66730E (12 September 2007); https://doi.org/10.1117/12.732215

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