https://doi.org/10.1140/epjd/e2008-00163-6
Expansion dynamics of an array of high density Bose-Einstein condensates produced in a 1D CO2 laser optical lattice
Gravitation Group, Tata Institute of Fundamental Research, Mumbai, India
Corresponding author: a sanjukta@tifr.res.in
Received:
23
June
2008
Published online:
20
August
2008
We discuss the expansion dynamics under mean-field repulsion of an array of 87Rb Bose-Einstein condensates produced in an
all-optical scheme involving 1D lattice with nearly 105 atoms, after fast evaporative cooling of just about 1 s.
Single site occupation exceeds 
in our experiments. The possibility of transition to
two-dimensionality was also investigated. The expansion behavior of the high density multiple micro-condensates produced directly in the CO2 laser
1D optical lattice, with a lattice spacing of 5.3 μm, agrees well with a numerical simulation based on the mean-field theory.
PACS: 03.75.Kk – Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow / 37.10.De – Atom cooling methods / 37.10.Jk – Atoms in optical lattices
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008
