All-Optical Production of Chromium Bose-Einstein Condensates
Other Condensed Matter
2009-11-13 v2
Abstract
We report on the production of ^52Cr Bose Einstein Condensates (BEC) with an all-optical method. We first load 5.10^6 metastable chromium atoms in a 1D far-off-resonance optical trap (FORT) from a Magneto Optical Trap (MOT), by combining the use of Radio Frequency (RF) frequency sweeps and depumping towards the ^5S_2 state. The atoms are then pumped to the absolute ground state, and transferred into a crossed FORT in which they are evaporated. The fast loading of the 1D FORT (35 ms 1/e time), and the use of relatively fast evaporative ramps allow us to obtain in 20 s about 15000 atoms in an almost pure condensate.
Keywords
Cite
@article{arxiv.0712.3521,
title = {All-Optical Production of Chromium Bose-Einstein Condensates},
author = {Q. Beaufils and R. Chicireanu and T. Zanon and B. Laburthe-Tolra and E. Marechal and L. Vernac and J. -C. Keller and O. Gorceix},
journal= {arXiv preprint arXiv:0712.3521},
year = {2009}
}
Comments
4 pages, 4 figures