The absolute frequency of the 87Sr optical clock transition

被引：144

作者：

Campbell, Gretchen K. ^{[1
,2
]}

Ludlow, Andrew D. ^{[1
,2
]}

Blatt, Sebastian ^{[1
,2
]}

Thomsen, Jan W. ^{[1
,2
]}

Martin, Michael J. ^{[1
,2
]}

de Miranda, Marcio H. G. ^{[1
,2
]}

Zelevinsky, Tanya ^{[1
,2
]}

Boyd, Martin M. ^{[1
,2
]}

Ye, Jun ^{[1
,2
]}

Diddams, Scott A. ^{[3
]}

Heavner, Thomas P. ^{[3
]}

Parker, Thomas E. ^{[3
]}

Jefferts, Steven R. ^{[3
]}

机构：

[1] Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[3] Natl Inst Stand & Technol, Div Time & Frequency, Boulder, CO 80305 USA

来源：

METROLOGIA | 2008年 / 45卷 / 05期

关键词：

D O I：

10.1088/0026-1394/45/5/008

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The absolute frequency of the (1)S(0)-(3)P(0) clock transition of (87)Sr has been measured to be 429 228 004 229 873.65 (37) Hz using lattice-confined atoms, where the fractional uncertainty of 8.6 x 10(-16) represents one of the most accurate measurements of an atomic transition frequency to date. After a detailed study of systematic effects, which reduced the total systematic uncertainty of the Sr lattice clock to 1.5 x 10(-16), the clock frequency is measured against a hydrogen maser which is simultaneously calibrated to the US primary frequency standard, the NIST Cs fountain clock, NIST-F1. The comparison is made possible using a femtosecond laser based optical frequency comb to phase coherently connect the optical and microwave spectral regions and by a 3.5 km fibre transfer scheme to compare the remotely located clock signals.

引用

页码：539 / 548

页数：10

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