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Phys. Rev. A 61, 061403 (2000) [4 pages]

Optical-dipole trapping of Sr atoms at a high phase-space density

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Tetsuya Ido1, Yoshitomo Isoya1, and Hidetoshi Katori1,2
1Cooperative Excitation Project, ERATO, Japan Science and Technology Corporation (JST), KSP D-842, 3-2-1 Sakado Takatsu-ku, Kawasaki, 213-0012, Japan
2Engineering Research Institute, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan

Rapid Communication Received 9 August 1999; published 2 May 2000

Employing a far-off resonance optical-dipole trap (FORT), we attained a phase-space density exceeding 0.1, or an order to quantum degeneracy. Strontium atoms were magneto-optically cooled and trapped using the spin-forbidden 1S0-3P1 transition and then compressed into a FORT that was designed to allow simultaneous Doppler cooling. We discussed that the phase-space density was finally limited by the light-assisted collisions occurring in the optical cooling.


©2000 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.61.061403
DOI: 10.1103/PhysRevA.61.061403
PACS: 32.80.Pj

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