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

• Published in: arXiv.org
• Main Authors: Courtillot, I, Quessada, A, Kovacich, R P, Brusch, A, Kolker, D, J-J Zondy, Rovera, G D, Lemonde, P
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 06.03.2003
• Subjects: Dipoles; Fluorescence; Frequency standards; Optical frequency; Strontium 87

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 t...