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Ultrastable CO2 Laser Trapping of Lithium Fermions

K. M. O'Hara, S. R. Granade, M. E. Gehm, T. A. Savard, S. Bali, C. Freed, and J. E. Thomas
Phys. Rev. Lett. 82, 4204 – Published 24 May 1999
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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 1011Torr. To our knowledge, this is the longest storage time ever achieved with an all-optical trap, comparable to the best reported magnetic traps.

  • Received 8 March 1999

DOI:https://doi.org/10.1103/PhysRevLett.82.4204

©1999 American Physical Society

Authors & Affiliations

K. M. O'Hara, S. R. Granade, M. E. Gehm, T. A. Savard, S. Bali, C. Freed*, and J. E. Thomas

  • Physics Department, Duke University, Durham, North Carolina 27708-0305

  • *Permanent Address: Department of Electrical Engineering and Computer Science, MIT, Cambridge, MA 02139.

See Also

Atoms Trapped by the Light

Phys. Rev. Focus 3, 29 (1999)

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Vol. 82, Iss. 21 — 24 May 1999

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