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physics.atom-ph2004
Accurate spectroscopy of Sr atoms
Irene Courtillot, Audrey Quessada-Vial, Anders Brusch +3
We report the frequency measurement with an accuracy in the 100 kHz range of several optical transitions of atomic Sr : at 689 nm, at 688 nm and $^3P_…
physics.atom-ph2003
A clock transition for a future optical frequency standard with trapped atoms
I. Courtillot, A. Quessada, R. P. Kovacich +5
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 lea…