Title :
Frequency measurement of a Sr optical lattice clock using a coherent optical link over a 120-km fiber
Author :
Hong, F.-L. ; Musha, M. ; Takamoto, M. ; Inaba, H. ; Yanagimachi, S. ; Takamizawa, A. ; Watabe, K. ; Ikegami, T. ; Imae, M. ; Fujii, Y. ; Amemiya, M. ; Nakagawa, K. ; Ueda, K. ; Katori, H.
Author_Institution :
Nat. Metrol. Inst. of Japan (NMIJ), Nat. Inst. of Adv. Ind. Sci. & Technol. (AIST), Tsukuba, Japan
Abstract :
We demonstrate a precision frequency measurement using a phase-stabilized 120-km optical fiber link over a physical distance of 50 km. The absolute frequency of the 87Sr optical lattice clock is measured to be 429228004229874.1(2.4) Hz.
Keywords :
atomic clocks; frequency measurement; measurement by laser beam; optical links; optical variables measurement; strontium; Sr; coherent optical link; distance 120 km; distance 50 km; frequency measurement; optical lattice clock; phase stability; Clocks; Frequency measurement; Lattices; Metrology; Optical fiber communication; Optical fiber networks; Optical fiber testing; Optical fibers; Strontium; Ultrafast optics; (060.2360) Fiber optics links and subsystems; (120.3940) Metrology; (120.4800) Optical standards and testing;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
