Two-species magneto-optical trap with 40K and 87Rb

Details Two-species magneto-optical trap with 40K and 87Rb Two-species magneto-optical trap with 40K and 87Rb

2001-08-20

arxiv.org/abs/cond-mat/0108287v2

Phys. Rev. A 65, 021402 (2002)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures; accepted for publication in Physical Review A

Scientific paper

10.1103/PhysRevA.65.021402

We trap and cool a gas composed of 40K and 87Rb, using a two-species magneto-optical trap (MOT). This trap represents the first step towards cooling the Bose-Fermi mixture to quantum degeneracy. Laser light for the MOT is derived from laser diodes and amplified with a single high power semiconductor amplifier chip. The four-color laser system is described, and the single-species and two-species MOTs are characterized. Atom numbers of 1x10^7 40K and 2x10^9 87Rb are trapped in the two-species MOT. Observation of trap loss due to collisions between species is presented and future prospects for the experiment are discussed.

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