Title :
Optical frequency metrology with ytterbium and strontium optical lattice clocks
Author :
Hong, Feng-Lei ; Yasuda, Masami ; Kohno, Takuya ; Hosaka, Kazumoto ; Akamatsu, Daisuke ; Inaba, Hajime ; Nakajima, Yoshiaki ; Iwakuni, Kana ; Onae, Atsushi
Abstract :
We report on the development of an ytterbium (171Yb) and a strontium (87Sr) optical lattice clock at the National Metrology Institute of Japan (NMIJ). The result of absolute frequency measurement of the 171Yb lattice clock is shown. We also report on narrow-linewidth fiber-based frequency combs that are used not only to measure the absolute frequency of the optical lattice clocks but also to servo control the frequency of the lasers for cooling and trapping Yb and Sr atoms.
Keywords :
atomic clocks; frequency measurement; laser cooling; laser variables measurement; optical lattices; optical pulse compression; strontium; ytterbium; 171Yb; 87Sr; NMIJ; National Metrology Institute of Japan; Sr atom cooling; Sr atom trapping; Yb atom cooling; Yb atom trapping; frequency measurement; laser frequency; narrow-linewidth fiber-based frequency combs; optical frequency metrology; servo control; strontium optical lattice clocks; ytterbium optical lattice clocks; Clocks; Erbium-doped fiber lasers; Frequency measurement; Lattices; Optical fiber amplifiers;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050323
