We have used the light from diode lasers (λ = 852 nm) to damp the motion of atoms in a cesium vapor. We have been able to contain more than 10<sup>7</sup> atoms for 0.2 sec and cool them to a temperature of 100<sup>+100</sup><sub>−30</sub> μK in this viscous photon medium (the so-called optical molasses).
© 1988 Optical Society of America
D. Sesko, C. G. Fan, and C. E. Wieman, "Production of a cold atomic vapor using diode-laser cooling," J. Opt. Soc. Am. B 5, 1225-1227 (1988)