A simplified optical lattice clock

Details A simplified optical lattice clock A simplified optical lattice clock

2008-12-22

arxiv.org/abs/0812.4259v1

Applied Physics B, 97, pp.27-33 (2009)

Physics

Atomic Physics

6 pages, 5 figures, submitted to Appl. Phys. B

Scientific paper

10.1007/s00340-009-3488-x

Existing optical lattice clocks demonstrate a high level of performance, but they remain complex experimental devices. In order to address a wider range of applications including those requiring transportable devices, it will be necessary to simplify the laser systems and reduce the amount of support hardware. Here we demonstrate two significant steps towards this goal: demonstration of clock signals from a Sr lattice clock based solely on semiconductor laser technology, and a method for finding the clock transition (based on a coincidence in atomic wavelengths) that removes the need for extensive frequency metrology hardware. Moreover, the unexpected high contrast in the signal revealed evidence of density dependent collisions in Sr-88 atoms.

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