All-optical production of 7Li Bose-Einstein condensation using Feshbach resonances
Atomic Physics
2010-09-07 v1
Abstract
We show an all-optical method of making 7Li condensate using tunability of the scattering length in the proximity of a Feshbach resonance. We report the observation of two new Feshbach resonances on |F = 1;mF = 0> state. The narrow (broad) resonance of 7 G (34 G) width is detected at 831 +- 4 G (884 +4 -13 G). Position of the scattering length zero crossing between the resonances is found at 836 +- 4 G. The broad resonance is shown to be favorable for run away evaporation which we perform in a crossed-beam optical dipole trap. Starting directly form the phase space density of a magneto-optical trap we observe a Bose-Einstein condensation threshold in less than 3 s of forced evaporation.
Keywords
Cite
@article{arxiv.0712.0717,
title = {All-optical production of 7Li Bose-Einstein condensation using Feshbach resonances},
author = {Noam Gross and Lev Khaykovich},
journal= {arXiv preprint arXiv:0712.0717},
year = {2010}
}
Comments
5 pages, 5 figures