12 September 2007 Lattice-based optical clock using an even isotope of Yb
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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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zeb W. Barber, Zeb W. Barber, Chad W. Hoyt, Chad W. Hoyt, Jason E. Stalnaker, Jason E. Stalnaker, Nathan Lemke, Nathan Lemke, Chris W. Oates, Chris W. Oates, Tara M Fortier, Tara M Fortier, Scott Diddams, Scott Diddams, Leo Hollberg, Leo Hollberg, } "Lattice-based optical clock using an even isotope of Yb", Proc. SPIE 6673, Time and Frequency Metrology, 66730E (12 September 2007); doi: 10.1117/12.732215; https://doi.org/10.1117/12.732215
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