Title: Precision spectroscopy with ultracold atoms: measurement of optical frequencies
Abstract:Precision laser spectroscopy at λ = 657 nm based on cold neutral Ca atoms released from a magneto-optical trap (MOT) is described. Systematic contributions to the uncertainty resulting from the...Precision laser spectroscopy at λ = 657 nm based on cold neutral Ca atoms released from a magneto-optical trap (MOT) is described. Systematic contributions to the uncertainty resulting from the residual velocity of the atoms and the acceleration in the gravitational field are determined and their influence is reduced by using a combination of different atom interferometers. The results are applied to an optical frequency standard based on Ca atoms. A fractional uncertainty in the measured clock frequency 2 • 10<sup>-14</sup> is observed. The application of a novel method for producing ultra-cold atoms showed in first atom interferometric measurements the potential to further reduce the uncertainty to below 10<sup>-15</sup>.Read More
Publication Year: 2003
Publication Date: 2003-11-06
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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