Doppler cooling of gallium atoms: 1. Fine structure effects and transient coherences

Ian Lane, R. Chen, James McCann

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A realistic model of the dipole radiation forces in transverse Doppler cooling (with a s+-s- laser configuration) of an atomic beam of group 13 elements is studied within the quantum-kinetic equation framework. The full energy level sub-structure for such an atom with I = 0 (such as 66Ga) is analysed. Two cooling strategies are investigated; the first involving the 2P3/2 ? 2D5/2 transition and the second a dual laser cooling experiment involving transitions 2P1/2 and 2P3/2 ? 2S1/2. The latter scheme creates a velocity-independent dark-state resonance that inhibits a steady-state dipole cooling force. However, time-dependent calculations show that transient cooling forces are present that could be exploited for laser cooling purposes in pulsed laser fields.
Original languageEnglish
Article number007
Pages (from-to)1535-1551
Number of pages17
JournalJournal of Physics B: Atomic Molecular and Optical Physics
Volume40 (8)
Issue number8
DOIs
Publication statusPublished - 28 Apr 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

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