期刊
APPLIED PHYSICS B-LASERS AND OPTICS
卷 97, 期 1, 页码 27-33出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-009-3488-x
关键词
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资金
- LENS [RII3 CT 2003 506350]
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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