Conference Paper

# Improving the stability and accuracy of the Yb optical lattice clock

NIST, Boulder, CO, USA

DOI: 10.1109/FCS.2011.5977827 Conference: Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International Source: IEEE Xplore

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**ABSTRACT:**We discuss the minimization of the Dick effect in an optical lattice clock. We show that optimizing the time sequence of operation of the clock can lead to a significant reduction of the clock stability degradation by the frequency noise of the interrogation laser. By using a nondestructive detection of the atoms, we are able to recycle most of the atoms between cycles and consequently to strongly reduce the time spent capturing the atoms in each cycle. With optimized parameters, we expect a fractional Allan deviation better than 2 x 10(-16tau-1/2) for the lattice clock.IEEE transactions on ultrasonics, ferroelectrics, and frequency control 03/2010; 57(3):623-8. · 1.80 Impact Factor - [Show abstract] [Hide abstract]

**ABSTRACT:**We evaluate thermal noise (Brownian motion) in a rigid reference cavity used for frequency stabilization of lasers, based on the mechanical loss of cavity materials and the numerical analysis of the mirror-spacer mechanics with the direct application of the fluctuation dissipation theorem. This noise sets a fundamental limit for the frequency stability achieved with a rigid frequency-reference cavity of order 1 Hz/ square root Hz (0.01 Hz/ square root Hz) at 10 mHz (100 Hz) at room temperature. This level coincides with the world-highest level stabilization results.Physical Review Letters 01/2005; 93(25):250602. · 7.73 Impact Factor -
##### Article: Vibration insensitive optical cavity

Physical Review A 01/2007; 75(1). · 3.04 Impact Factor

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