Bose-Einstein condensation of 85Rb by direct evaporation in an optical dipole trap

• Main Authors: Marchant, A. L, Händel, S, Hopkins, S. A, Wiles, T. P, Cornish, S. L
• Format: Journal Article
• Language: English
• Published: 10-04-2013
• Subjects: Physics - Atomic Physics; Physics - Quantum Gases
• DOI: 10.48550/arxiv.1203.6598

Phys. Rev. A 85, 053647 (2012) We report a simple method for the creation of Bose-Einstein condensates of
$^{85}$Rb by direct evaporation in a crossed optical dipole trap. The
independent control of the trap frequencies and magnetic bias field afforded by
the trapping scheme permits full control of the trapped atomic sample, enabling
the collision parameters to be easily manipulated to achieve efficient
evaporation in the vicinity of the 155 G Feshbach resonance. We produce nearly
pure condensates of up to $4\times10^4$ atoms and demonstrate the tunable
nature of the atomic interactions.