Аннотация
We describe an apparatus for quickly and simply producing $\Rb87$Bose-Einstein condensates. It is based on a magnetic quadrupole trap and a reddetuned optical dipole trap. We collect atoms in a magneto-optical trap (MOT)and then capture the atom in a magnetic quadrupole trap and force rfevaporation. We then transfer the resulting cold, dense cloud into a spatiallymode-matched optical dipole trap by lowering the quadrupole field gradient tobelow gravity. This technique combines the efficient capture of atoms from aMOT into a magnetic trap with the rapid evaporation of optical dipole traps;the approach is insensitive to the peak quadrupole gradient and the precisetrapping beam waist. Our system reliably produces a condensate with$N\approx2\times10^6$ atoms every $16\second$.
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