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Phys. Rev. A 65, 021402(R) (2002) [4 pages]

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

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J. Goldwin, S. B. Papp, B. DeMarco*, and D. S. Jin†
JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309

Received 17 August 2001; published 3 January 2002

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 1×107 40K and 2×109 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.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.65.021402
DOI:
10.1103/PhysRevA.65.021402
PACS:
32.80.Pj, 03.75.Fi, 05.30.Fk

*Present address: Time and Frequency Division, National Institute of Standards and Technology, University of Colorado, Boulder, CO 80309.

†Present address: Quantum Physics Division, National Institute of Standards and Technology, University of Colorado, Boulder, CO 80309.

 
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