A slow gravity compensated Atom Laser
arXiv:1005.3964 · doi:10.1007/s00340-010-4078-7
Abstract
We report on a slow guided atom laser beam outcoupled from a Bose-Einstein condensate of 87Rb atoms in a hybrid trap. The acceleration of the atom laser beam can be controlled by compensating the gravitational acceleration and we reach residual accelerations as low as 0.0027 g. The outcoupling mechanism allows for the production of a constant flux of 4.5x10^6 atoms per second and due to transverse guiding we obtain an upper limit for the mean beam width of 4.6 μ\m. The transverse velocity spread is only 0.2 mm/s and thus an upper limit for the beam quality parameter is M^2=2.5. We demonstrate the potential of the long interrogation times available with this atom laser beam by measuring the trap frequency in a single measurement. The small beam width together with the long evolution and interrogation time makes this atom laser beam a promising tool for continuous interferometric measurements.
7 pages, 8 figures, to be published in Applied Physics B
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Cited by in corpus (22)
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- Tunable dual-species Bose-Einstein condensates of K and Rb
- Universal three-body physics in ultracold KRb mixtures
- Extended coherence time on the clock transition of optically trapped Rubidium
- Chaotic dynamics and fractal structures in experiments with cold atoms
- Optically guided beam splitter for propagating matter waves
- Bose-Einstein condensation of 87Rb in a levitated crossed dipole trap
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- Simple method for producing Bose-Einstein condensates of metastable helium using a single beam optical dipole trap
- Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates