PROGRESS IN THE EVALUATION AND OPERATION OF THE NRC STRONTIUM SINGLE ION FREQUENCY STANDARD AS AN OPTICAL ATOMIC CLOCK

TitlePROGRESS IN THE EVALUATION AND OPERATION OF THE NRC STRONTIUM SINGLE ION FREQUENCY STANDARD AS AN OPTICAL ATOMIC CLOCK
Publication TypeBook
Year of Publication2010
AuthorsMadej, A. A., P. Dube, J. E. Bernard, G. Humphrey, M. Vainio, J. Jiang, and D. J. Jones
PublisherIeee
CityNew York
ISBN Number978-1-4244-6794-5
AbstractImproved functionality and accuracy of the NRC Sr(+) single trapped ion 445-THz standard is described. Absolute frequency stabilization of all laser sources has been achieved together with loading of the ion trap using photo-ionization methods. An Erbium fiber laser based frequency comb is used to directly measure the 445-THz clock frequency. A 9 hr preliminary measurement was performed with statistical uncertainty of 1.4 Hz (3x10(-15)) in excellent agreement with a previously reported value in 2005. A new endcap trap with probing and micromotion correction in three dimensions has been assembled and will have uncertainties approaching 10(-17) in the near future.
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