Sub-Doppler cooling of sodium atoms in gray molasses
Authors: Colzi G., Durastante G., Fava E., Serafini S., Lamporesi G., Ferrari G.
Autors Affiliation: INO-CNR BEC Center and Dipartimento di Fisica, Universit`a di Trento, 38123 Povo, Italy; Trento Institute for Fundamental Physics and Applications, INFN, 38123 Povo, Italy
Abstract: We report on the realization of sub-Doppler laser cooling of sodium atoms in gray molasses using the D-1 optical transition (3s S-2(1/2) -> 3p P-2(1/2)) at 589.8 nm. The technique is applied to samples containing 3 x 10(9) atoms, previously cooled to 350 mu K in a magneto-optical trap, and it leads to temperatures as low as 9 mu K and phase-space densities in the range of 10(-4). The capture efficiency of the gray molasses is larger than 2/3, and we observe no density-dependent heating for densities up to 10(11) cm(-3).
Journal/Review: PHYSICAL REVIEW A
Volume: 93 (2) Pages from: 023421-1 to: 023421-6
KeyWords: laser cooling; sodium; gray molassesDOI: 10.1103/PhysRevA.93.023421Citations: 24data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2022-08-07References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here