Ultrastable CO2 Laser Trapping of Lithium Fermions

  • O'Hara K
  • Granade S
  • Gehm M
 et al. 
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Abstract

We demonstrate an ultrastable CO2 laser trap that provides tight confinement of neutral atoms with negligible optical scattering and minimal laser-noise- induced heating. Using this method, fermionic 6Li atoms are stored in a 0.4 mK deep well with a 1/e trap lifetime of 300 sec, consistent with a background pressure of 10^(-11) Torr. To our knowledge, this is the longest storage time ever achieved with an all-optical trap, comparable to the best reported magnetic traps.

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Authors

  • K. M. O'Hara

  • S. R. Granade

  • M. E. Gehm

  • T. A. Savard

  • S. Bali

  • C. Freed

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