Laser Cooling of Cesium Atoms Below 3 μK
- 15 August 1990
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 12 (8), 683-688
- https://doi.org/10.1209/0295-5075/12/8/003
Abstract
We have measured the temperature of cesium atoms released from optical molasses. For a wide range of laser intensity and detuning from resonance, the temperature depends only on the intensity-to-detuning ratio. The lowest temperature achieved is (2.5 ± 0.6) μK, which corresponds to an r.m.s. velocity of 12.5 mm/s or 3.6 times the single-photon recoil velocity. This is, to our knowledge, the coldest kinetic temperature ever measured for three-dimensional (3D) cooling.Keywords
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