Progress toward a single indium ion optical frequency standard

被引:0
|
作者
Liu, T. [1 ]
Wang, Y. H. [1 ]
Elman, V. [1 ]
Stejskal, A. [1 ]
Zhao, Y. N. [1 ]
Zhang, J. [1 ]
Lu, Z. H. [1 ]
Wang, L. J. [1 ]
Dumke, R. [1 ]
Becker, Th. [2 ]
Walther, H. [2 ]
机构
[1] Max Planck Res Grp, Inst Opt Informat & Photon, D-91058 Erlangen, Germany
[2] Max Planck Inst Quantum Opt, D-85748 Garching, Germany
关键词
D O I
10.1109/FREQ.2007.4319107
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We report an improved absolute frequency measurement of the 5s(2) S-1(0) - 5s5p P-3(0) narrowline clock transition at 236.5 nm, for a single trapped and laser cooled In-115(+). Using a narrowline laser as the local oscillator, a linewidth of 43 Hz for the transition is resolved. For absolute frequency measurement we use an optical frequency comb referenced to a cesium clock The transition frequency is found to be 1, 267, 402, 452, 900, 967 (63) Hz, averaged over 13 days of separate measurements. The accuracy is about 5.0 X 10(-14). And a preliminary absolute frequency measurement is shown with a Hydrogen maser as the reference. We discuss possibilities for further improvement.
引用
收藏
页码:407 / +
页数:3
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