Precision frequency measurement of visible intercombination lines of strontium

被引：69

作者：

Ferrari, G

Cancio, P

Drullinger, R

Giusfredi, G

Poli, N

Prevedelli, M

Toninelli, C

Tino, GM

机构：

[1] Univ Florence, INFM UdR Firenze, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy

[2] Univ Florence, INFM UdR Firenze, LENS, I-50019 Sesto Fiorentino, Italy

[3] Ist Nazl Ott Applicata, I-50125 Florence, Italy

[4] Univ Bologna, Dipartimento Chim Fis, I-40136 Bologna, Italy

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.91.243002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the direct frequency measurement of the visible 5s(2) S-1(0)-5s5p P-3(1) intercombination line of strontium that is considered a possible candidate for a future optical-frequency standard. The frequency of a cavity-stabilized laser is locked to the saturated fluorescence in a thermal Sr atomic beam and is measured with an optical-frequency comb generator referenced to the SI second through a global positioning system signal. The Sr-88 transition is measured to be at 434 829 121 311 (10) kHz. We measure also the Sr-88-Sr-86 isotope shift to be 163 817.4 (0.2) kHz.

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页数：4

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