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Loading a vapor-cell magneto-optic trap using light-induced atom desorption B. P. Anderson* and M. A. Kasevich
 

Summary: Loading a vapor-cell magneto-optic trap using light-induced atom desorption
B. P. Anderson* and M. A. Kasevich
Physics Department, Yale University, New Haven, Connecticut 06520-8120
Received 14 July 2000; published 12 January 2001
Low-intensity white light was used to increase the loading rate of 87
Rb atoms into a vapor-cell magneto-
optic trap by inducing nonthermal desorption of Rb atoms from the stainless-steel walls of the vapor cell. An
increased Rb partial pressure reached a new equilibrium value in fewer than 10 s after switching on the
broadband light source. After the source was turned off, the partial pressure returned to its previous value in
1/e times as short as 10 s.
DOI: 10.1103/PhysRevA.63.023404 PACS number s : 32.80.Pj, 68.43.Mn, 42.50.Vk
I. INTRODUCTION
The evaporative cooling techniques used to achieve Bose-
Einstein condensation BEC in atomic gases 14 rely on
loading large numbers of atoms into magnetic traps with
long trap lifetimes. The approach originally taken by Ander-
son et al. 1 was to load Rb atoms into a vapor-cell 5
magneto-optic trap MOT 6 and to subsequently transfer
atoms into a magnetic trap located in the same cell. Large
numbers of atoms and long lifetimes were achieved by opti-

  

Source: Anderson, Brian P. - Optical Sciences Center, University of Arizona

 

Collections: Physics