Title :
Frequency Measurement of an Optical Lattice Clock
Author :
Hong, Feng-Lei ; Fujii, Yasuhisa ; Imae, Michito ; Takamoto, Masao ; Higashi, Ryoichi ; Katori, Hidetoshi
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol, Ibaraki
Abstract :
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 1S0 -3P0 clock transition of the 87Sr 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.
Keywords :
atomic clocks; frequency measurement; measurement by laser beam; optical lattices; optical variables measurement; strontium; GPS link; H-maser; International Atomic Time; National Metrological Institute; Sr; clock transition; frequency measurement system; optical fiber link; optical lattice clock; Atom optics; Atomic measurements; Clocks; Frequency measurement; Global Positioning System; Lattices; Metrology; Strontium; Time measurement; Ultrafast optics;
Conference_Titel :
IEEE/LEOS Summer Topical Meetings, 2007 Digest of the
Conference_Location :
Portland, OR
Print_ISBN :
1-4244-0926-8
Electronic_ISBN :
1099-4742
DOI :
10.1109/LEOSST.2007.4288378
