Data di Pubblicazione:
2001
Abstract:
We have developed and characterized a new method to produce a continuous beam
of cold atoms from a standard vapour cell magneto-optical trap (MOT).
The experimental apparatus is very simple. Using a laser beam it is possible
to hollow out in the source MOT a direction of unbalanced radiation pressure
along which cold atoms can be accelerated out of the trap. The transverse cooling
process that takes place during the extraction reduces the beam divergence.
The atomic beam is used to load a magneto-optical trap operation in an
ultra high vacuum environment. At avapour pressure of of 10^-8 mbar
in the loading cell. we have produced a continuous flux of 7 x 10^7 atoms/s
at the recapture cell with a mean velocity of 14 m/s. A comparison of this
method with a pulsed transfer scheme is presented.
of cold atoms from a standard vapour cell magneto-optical trap (MOT).
The experimental apparatus is very simple. Using a laser beam it is possible
to hollow out in the source MOT a direction of unbalanced radiation pressure
along which cold atoms can be accelerated out of the trap. The transverse cooling
process that takes place during the extraction reduces the beam divergence.
The atomic beam is used to load a magneto-optical trap operation in an
ultra high vacuum environment. At avapour pressure of of 10^-8 mbar
in the loading cell. we have produced a continuous flux of 7 x 10^7 atoms/s
at the recapture cell with a mean velocity of 14 m/s. A comparison of this
method with a pulsed transfer scheme is presented.
Tipologia CRIS:
01.01 Articolo in rivista
Keywords:
optical cooling; optical trapping
Elenco autori:
DE ANGELIS, Marella
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