Title :
Minimizing the dick effect in an optical lattice clock
Author :
Westergaard, Philip G. ; Lodewyck, Jérôme ; Lemonde, Pierre
Author_Institution :
CNRS, UPMC, Paris, France
fDate :
3/1/2010 12:00:00 AM
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 ?? 10-16??-1/2 for the lattice clock.
Keywords :
atomic clocks; laser cooling; optical lattices; optical pumping; radiation pressure; Dick effect; clock stability degradation; fractional Allan deviation; frequency noise; interrogation laser; nondestructive detection; optical lattice clock; 1f noise; Atomic beams; Clocks; Degradation; Frequency; Laser noise; Laser stability; Lattices; Noise reduction; Optical noise;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2010.1457