Sub-Doppler laser cooling of fermionic 40K atoms in three-dimensional gray optical molasses
Quantum Gases
2015-06-11 v1 Atomic Physics
Abstract
We demonstrate sub-Doppler cooling of 40K on the D_1 atomic transition. Using a gray molasses scheme, we efficiently cool a compressed cloud of 6.5x10^8 atoms from ~ 4\mK to 20uK in 8 ms. After transfer in a quadrupole magnetic trap, we measure a phase space density of ~10^-5. This technique offers a promising route for fast evaporation of fermionic 40K.
Keywords
Cite
@article{arxiv.1210.1310,
title = {Sub-Doppler laser cooling of fermionic 40K atoms in three-dimensional gray optical molasses},
author = {Diogo Rio Fernandes and Franz Sievers and Norman Kretzschmar and Saijun Wu and C. Salomon and Frédéric Chevy},
journal= {arXiv preprint arXiv:1210.1310},
year = {2015}
}
Comments
6 pages; 7 figures; submitted to EPL