Frequency Measurement of an Optical Lattice Clock

Conference PaperinLEOS Summer Topical Meeting · August 2007with2 Reads
DOI: 10.1109/LEOSST.2007.4288378 · Source: IEEE Xplore
Conference: IEEE/LEOS Summer Topical Meetings, 2007 Digest of the
A frequency measurement system is developed away from a National Metrological Institute with a frequency link to International Atomic Time (TAI). The absolute frequency of the <sup>1</sup>S<sub>0</sub> -<sup>3</sup>P<sub>0</sub> clock transition of the <sup>87</sup>Sr lattice clock is determined to be 429,228,004,229,875(4) Hz. The frequency measurement system is being further improved by introducing an optical fiber link and by upgrading the GPS link.
Show more