Dipole force trapping of caesium atoms
Journal of Physics B: Atomic, Molecular and Optical Physics 33:19 (2000) 4149-4155
Abstract:
A novel dipole force trap was developed for trapping caesium atoms in the lower hyperfine level of the ground state and in preliminary experiments a cloud of ≈1000 atoms was trapped. The viability of the trap is discussed, including suggestions for amendments to the trap design and problems that might occur which are intrinsic to the caesium atom.The experimental observation of Beliaev damping in a Bose condensed gas
(2000)
Observation of harmonic generation and nonlinear coupling in the collective dynamics of a bose-einstein condensate.
Phys Rev Lett 85:4 (2000) 692-695
Abstract:
We report the observation of harmonic generation and strong nonlinear coupling of two collective modes of a condensed gas of rubidium atoms. Using a modified time averaged orbiting potential trap we changed the trap anisotropy to a value where the frequency of the m = 0 high-lying mode corresponds to twice the frequency of the m = 0 low-lying mode, thus leading to strong nonlinear coupling between these modes. By changing the anisotropy of the trap and exciting the low-lying mode we observed significant frequency shifts of this fundamental mode and also the generation of its second harmonic.Bose-Einstein condensation in a stiff TOP trap with adjustable geometry
(2000)
Observation of harmonic generation and nonlinear coupling in the collective dynamics of a Bose condensate
(2000)