Novel repumping on 3P0 →3D1 for Sr magneto-optical trap and Landé g factor measurement of 3D1

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  • Preetam Ramchurn
  • Marco Menchetti
  • Qasim Ubaid
  • Jonathan Jones

Colleges, School and Institutes


We realize an experimental facility for cooling and trapping strontium (Sr) atoms and measure the Landé g factor of 3D1 of 88Sr. Thanks to a novel repumping scheme with the 3P2 → 3S1 and 3P0 → 3D1 combination and the permanent magnets based self-assembled Zeeman slower, the peak atom number in the continuously repumped blue magneto-optical trap is enhanced by a factor of 15 with respect to the non-repumping case, and reaches ~1 billion. Furthermore, using the resolved-sideband Zeeman spectroscopy, the Landé g factor of 3D1 is measured to be 0.4995(88) showing a good agreement with the theoretical value of 0.4988. The results will have an impact on various applications including atom laser, dipolar interactions, quantum information and precision measurements.


Original languageEnglish
Article number235301
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number23
Publication statusPublished - 14 Dec 2020