TY - JOUR
T1 - Holographic power-law traps for the efficient production of Bose-Einstein condensates
AU - Bruce, Graham D.
AU - Bromley, Sarah L.
AU - Smirne, Giuseppe
AU - Torralbo-Campo, Lara
AU - Cassettari, Donatella
PY - 2011/11/14
Y1 - 2011/11/14
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevA.84.053410
DO - 10.1103/PhysRevA.84.053410
M3 - Article
SN - 1050-2947
VL - 84
SP - -
JO - Physical Review. A, Atomic, molecular, and optical physics
JF - Physical Review. A, Atomic, molecular, and optical physics
IS - 5
M1 - 053410
ER -