Abstract
We use a phase-only spatial light modulator to generate light distributions in which the intensity decays as a power law from a central maximum with order ranging from 2 (parabolic) to 0.5. We suggest that a sequence of these can be used as a time-dependent optical dipole trap for all-optical production of Bose-Einstein condensates (BECs) in two stages: efficient evaporative cooling in a trap with adjustable strength and depth, followed by an adiabatic transformation of the trap order to cross the BEC transition in a reversible way. Realistic experimental parameters are used to verify the capability of this approach in producing larger BECs than by evaporative cooling alone.
©2011 American Physical Society
©2011 American Physical Society
Original language | English |
---|---|
Article number | 053410 |
Number of pages | 6 |
Journal | Physical Review A |
Volume | 84 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2011 |