N. Friedman et al., Compression of cold atoms to very high densities in a rotating-beam blue-detuned optical trap - art. no. 031403, PHYS REV A, 6103(3), 2000, pp. 1403
We propose and demonstrate a scheme for a blue-detuned optical dipole trap
for cold atoms which consists of a single, rapidly rotating laser beam. We
characterize a parameter range in which the optical potential can be accura
tely described by a quasistatic time-averaged potential. The trap is loaded
with >10(6) Rb atoms, and is then compressed adiabatically by a factor of
350 to a final density of 5 X 10(13) cm(-3). A similar to 4 times adiabatic
increase in the peak phase-space density of the trapped atoms is obtained
due to the change in the shape of the trap potential. The two-body elastic
and inelastic collision rates of atoms in the compressed trap are determine
d.