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Efficient magneto-optical trapping of a metastable helium gas

Published online by Cambridge University Press:  15 April 2001

F. Pereira Dos Santos ,
F. Perales ,
J. Léonard ,
A. Sinatra ,
J. Wang ,
F. S. Pavone ,
E. Rasel ,
C. S. Unnikrishnan  and
M. Leduc
F. Pereira Dos Santos*
Affiliation:
Laboratoire Kastler Brossel (Unité de Recherche de l'École Normale Supérieure et de l'Université Pierre et Marie Curie, associée au CNRS (UMR 8552)) , Département de Physique de l'École Normale Supérieure, 24 rue Lhomond, 75231 Paris Cedex 05, France
F. Perales
Affiliation:
Laboratoire de Physique des Lasers (UMR 7538 du CNRS) , Université Paris Nord, avenue J.B. Clément, 93430 Villetaneuse, France
J. Léonard
Affiliation:
Laboratoire Kastler Brossel (Unité de Recherche de l'École Normale Supérieure et de l'Université Pierre et Marie Curie, associée au CNRS (UMR 8552)) , Département de Physique de l'École Normale Supérieure, 24 rue Lhomond, 75231 Paris Cedex 05, France
A. Sinatra
Affiliation:
Laboratoire Kastler Brossel (Unité de Recherche de l'École Normale Supérieure et de l'Université Pierre et Marie Curie, associée au CNRS (UMR 8552)) , Département de Physique de l'École Normale Supérieure, 24 rue Lhomond, 75231 Paris Cedex 05, France
J. Wang
Affiliation:
Laboratoire Kastler Brossel (Unité de Recherche de l'École Normale Supérieure et de l'Université Pierre et Marie Curie, associée au CNRS (UMR 8552)) , Département de Physique de l'École Normale Supérieure, 24 rue Lhomond, 75231 Paris Cedex 05, France
F. S. Pavone
Affiliation:
Dept. of Physics, Univ. of Perugia, Via Pascoli, Perugia, Italy and Lens and INFM, L.go E. Fermi 2, Firenze, Italy
E. Rasel
Affiliation:
Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
C. S. Unnikrishnan
Affiliation:
TIFR, Homi Bhabha Road, Mumbai 400005, India
M. Leduc
Affiliation:
Laboratoire Kastler Brossel (Unité de Recherche de l'École Normale Supérieure et de l'Université Pierre et Marie Curie, associée au CNRS (UMR 8552)) , Département de Physique de l'École Normale Supérieure, 24 rue Lhomond, 75231 Paris Cedex 05, France
*
[email protected]
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Abstract

This article presents a new experiment aiming at BEC of metastable helium atoms. It describes the design of a high flux discharge source of atoms and a robust laser system using a DBR diode coupled with a high power Yb doped fiber amplifier for manipulating the beam of metastable atoms. The atoms are trapped in a small quartz cell in an extreme high vacuum. The trapping design uses an additional laser (repumper) and allows the capture of a large number of metastable helium atoms (approximately 109) in a geometry favorable for loading a tight magnetostatic trap.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 14 , Issue 1 , April 2001 , pp. 69 - 76
Copyright
© EDP Sciences, 2001

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