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Development of optical frequency standards based upon the 2S1/2-2D5/2 transition in 88Sr+ and 87S+

被引：36
作者：
Barwood, G [1 ]
Gao, KL
Hill, P
Huang, G
Klein, HA
机构：
[1] Natl Phys Lab, Teddington TW11 0LW, Middx, England
[2] Chinese Acad Sci, Lab Magnet Resonance & Atom Mol Phys, Wuhan 437001, Peoples R China
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2001年 / 50卷 / 02期
关键词：
frequency control; frequency stability; optical spectroscopy; semiconductor lasers;
D O I：
10.1109/19.918187
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：
Recent work is presented on the development of an optical frequency standard, based on the S-2(1/2)-D-2(5/2) "clock" transition at 674 nm in two isotopes of strontium, A approximate to 200 Hz linewidth 674 nm laser has been frequency-stabilised to the centre of the S-2(1/2)-D-2(5/2) transition in two Sr-88(+) ions, separately confined in two RF traps, The frequency locking algorithm for control of the laser frequency to the transition using the two ions is described. The mean difference of the frequency observed in the two ions is 34(33) Hz, where the number in parenthesis is the standard uncertainty. The Allan deviation of the difference frequency stability was observed to range from 10 Hz to 50 Hz at 30 s. In Sr-87(+) there are "clock" transitions independent of the first order Zeeman shift; laser cooled Sr-87(+) ions have been observed in a new trap with an oven containing isotopically enriched Sr-87.
引用
收藏
页码：543 / 547
页数：5
相关论文
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