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Atom trapping in nondissipative optical lattices B. P. Anderson, T. L. Gustavson, and M. A. Kasevich
 

Summary: Atom trapping in nondissipative optical lattices
B. P. Anderson, T. L. Gustavson, and M. A. Kasevich
Department of Physics, Stanford University, Stanford, California 94305
Received 12 January 1996
Laser-cooled 7
Li atoms have been confined in three-dimensional spatially periodic potentials that are nearly
conservative. The potentials were formed from the intersection of four laser beams far-detuned from the optical
resonance. By adjusting the relative orientations of the beams, lattices with primitive translation vectors larger
than the laser light wavelength were created. We achieved an effective temperature of 80 K through
adiabatic reduction of the confining potential strength, and prepared ensembles with effective temperatures of
1.8 K by initially confining atoms in weak potentials. S1050-2947 96 50406-3
PACS number s : 32.80.Pj
Recent laser cooling experiments have focused on the
center-of-mass motion of ultracold atoms in spatially peri-
odic light-induced potentials. Important results have included
the discovery of sub-Doppler laser cooling mechanisms 1 ,
observation of Lamb-Dicke confinement of atoms, and quan-
tization of atomic motion 2 . A feature common to these
studies is that the atom-laser interactions were in a regime
where spontaneous emission damps the atomic motion.

  

Source: Anderson, Brian P. - Optical Sciences Center, University of Arizona

 

Collections: Physics