Abstract

We demonstrate a quasi-electrostatic trap for cold Cs atoms, using a focused 20-W CO₂ laser beam (λ = 10.6 μm). Excluding background gas collisions, we measure a trap loss rate of 0.30(33) atoms/s, which is consistent with the calculated photon-limited loss rate of 3 × 10⁻¹¹ atoms/s. We measure a ground-state hyperfine population relaxation lifetime of at least 10 s.

© 1996 Optical Society of America

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