TY - JOUR
T1 - Multimode-to-monomode guided-atom lasers
T2 - An entropic analysis
AU - Gattobigio, G. L.
AU - Couvert, A.
AU - Jeppesen, M.
AU - Mathevet, R.
AU - Guéry-Odelin, D.
PY - 2009/10/19
Y1 - 2009/10/19
N2 - We have experimentally demonstrated a high level of control of the mode populations of guided-atom lasers (GALs) by showing that the entropies per particle of an optically GAL and the one of the trapped Bose-Einstein condensate (BEC) from which it has been produced are the same. The BEC is prepared in a crossed beam optical dipole trap. We have achieved isentropic outcoupling for both magnetic and optical schemes. We can prepare GAL in a nearly pure monomode regime (85% in the ground state). Furthermore, optical outcoupling enables the production of spinor guided-atom lasers and opens the possibility to tailor their polarization.
AB - We have experimentally demonstrated a high level of control of the mode populations of guided-atom lasers (GALs) by showing that the entropies per particle of an optically GAL and the one of the trapped Bose-Einstein condensate (BEC) from which it has been produced are the same. The BEC is prepared in a crossed beam optical dipole trap. We have achieved isentropic outcoupling for both magnetic and optical schemes. We can prepare GAL in a nearly pure monomode regime (85% in the ground state). Furthermore, optical outcoupling enables the production of spinor guided-atom lasers and opens the possibility to tailor their polarization.
UR - http://www.scopus.com/inward/record.url?scp=70350217921&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.80.041605
DO - 10.1103/PhysRevA.80.041605
M3 - Article
SN - 1050-2947
VL - 80
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 041605
ER -