Recent progress on the NRC 88Sr+ single-ion optical frequency standard

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DOIResolve DOI: http://doi.org/10.1109/FREQ.2010.5556371
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TypeArticle
Proceedings title2010 IEEE International Frequency Control Symposium (FCS)
Conference2010 IEEE International Frequency Control Symposium (FCS), June 1-4, 2010, Newport Beach, California, USA
Pages6570; # of pages: 6
AbstractWe report our recent progress made with the NRC 88Sr+ single-ion optical frequency standard. The long-term operation of the standard was improved by actively stabilizing the cooling, repump and clearout laser sources, and by using a femtosecond fiber laser frequency comb to link the probe laser frequency to the microwave time standards. With the femtosecond fiber comb, we have demonstrated continuous operation for a period of eight days and continuous measurement of the probe laser source for three days. Micromotion shifts have been the dominant source of uncertainty in our rf Paul trap because laser beam access is only possible along one axis in the current design. With the aim of reducing to a minimum these shifts, we have constructed an endcap trap designed for minimization of micromotion along three orthogonal axes. We report on the successful trapping of single ions with this endcap trap. Since electrode contamination during trap loading can also induce micromotion shifts as a result of evolving patch potentials, we have increased the trap loading efficiency with photo-ionization.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedYes
NPARC number16446829
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Record identifier19e08fb4-afd7-48be-9c27-416343f6b3dd
Record created2011-02-01
Record modified2016-05-10
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