A clock transition for a future optical frequency standard with trapped atoms
原子物理
2009-11-10 v1
摘要
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.
引用
@article{arxiv.physics/0303023,
title = {A clock transition for a future optical frequency standard with trapped atoms},
author = {I. Courtillot and A. Quessada and R. P. Kovacich and A. Brusch and D. Kolker and J-J. Zondy and G. D. Rovera and P. Lemonde},
journal= {arXiv preprint arXiv:physics/0303023},
year = {2009}
}
备注
4 pages, 4 figures