Measuring the frequency of a Sr optical lattice clock using a 120 km coherent optical transfer

被引：101

作者：

Hong, F. -L. ^{[1
,4
]}

Musha, M. ^{[2
]}

Takamoto, M. ^{[3
,4
]}

Inaba, H. ^{[1
,4
]}

Yanagimachi, S. ^{[1
]}

Takamizawa, A. ^{[1
]}

Watabe, K. ^{[1
]}

Ikegami, T. ^{[1
]}

Imae, M. ^{[1
,4
]}

Fujii, Y. ^{[1
,4
]}

Amemiya, M. ^{[1
,4
]}

Nakagawa, K. ^{[2
]}

Ueda, K. ^{[2
]}

Katori, H. ^{[3
,4
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Natl Metrol Inst Japan, Tsukuba, Ibaraki 3058563, Japan

[2] Univ Electrocommun, Inst Laser Sci, Chofu, Tokyo 1828585, Japan

[3] Univ Tokyo, Grad Sch Engn, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[4] Japan Sci & Technol Agcy, Kawaguchi, Saitama 3320012, Japan

来源：

OPTICS LETTERS | 2009年 / 34卷 / 05期

关键词：

FIBER NETWORK; LINK;

D O I：

10.1364/OL.34.000692

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a precision frequency measurement using a phase-stabilized 120 km optical fiber link over a physical distance of 50 km. The transition frequency of the Sr-87 optical lattice clock at the University of Tokyo is measured to be 429228004229874.1(2.4) Hz referenced to international atomic time. The results demonstrate the excellent functions of the intercity optical fiber link and the great potential of optical lattice clocks for use in the redefinition of the second. (C) 2009 Optical Society of America

引用

页码：692 / 694

页数：3

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