Phys. Rev. A 61, 061403(R) (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 Katori^1,2
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

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.

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

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