Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

Holographic power-law traps for the efficient production of Bose-Einstein condensates

Bruce, Graham D. and Bromley, Sarah L. and Smirne, Giuseppe and Torralbo-Campo, Lara and Cassettari, Donatella (2011) Holographic power-law traps for the efficient production of Bose-Einstein condensates. Physical Review A, 84 (5). -. ISSN 1094-1622

Full text not available in this repository. (Request a copy from the Strathclyde author)

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.