Scaling laws for evaporative cooling in time-dependent optical traps


Journal Article

We derive scaling laws for the number of atoms, collision rate, and phase-space density as a function of trap depth for evaporative cooling in an adiabadically lowered optical trap. The results are in excellent agreement with a Boltzmann equation model and show that very large increases in phase-space density can be obtained without excessive slowing of the evaporation rate. Predictions are in reasonable agreement with a recent experiment that achieves Bose-Einstein condensation by evaporation in an optical trap. We also discuss evaporation of fermionic mixtures and explain why Pauli blocking does not strongly inhibit cooling. © 2001 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • O’Hara, KM; Gehm, ME; Granade, SR; Thomas, JE

Published Date

  • January 1, 2001

Published In

Volume / Issue

  • 64 / 5

Start / End Page

  • 4 -

Electronic International Standard Serial Number (EISSN)

  • 1094-1622

International Standard Serial Number (ISSN)

  • 1050-2947

Digital Object Identifier (DOI)

  • 10.1103/PhysRevA.64.051403

Citation Source

  • Scopus