A clock transition for a future optical frequency standard with trapped atoms

Phys. Rev. A 68, 030501(R) (2003) We report the first direct excitation of the strongly forbidden 5s2 1S0-5s5p 3P0 transition in 87Sr. Its frequency is 429 228 004 235 (20) kHz. A resonant laser creates a small leak in a magneto-optical trap (MOT): atoms build up to the metastable 3P0 state and esca...

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Main Authors Courtillot, I, Quessada, A, Kovacich, R. P, Brusch, A, Kolker, D, Zondy, J-J, Rovera, G. D, Lemonde, P
Format Journal Article
LanguageEnglish
Published 06.03.2003
Subjects
Physics - Atomic Physics
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Summary:Phys. Rev. A 68, 030501(R) (2003) We report the first direct excitation of the strongly forbidden 5s2 1S0-5s5p 3P0 transition in 87Sr. Its frequency is 429 228 004 235 (20) kHz. A resonant laser creates a small leak in a magneto-optical trap (MOT): atoms build up to the metastable 3P0 state and escape the trapping process, leading to a detectable decrease in the MOT fluorescence. This line has a natural width of 10^{-3} Hz and can be used for a new generation of optical frequency standards using atoms trapped in a light shift free dipole trap.
DOI:10.48550/arxiv.physics/0303023