Sodium Bose-Einstein condensates in the F = 2 state in a large-volume optical trap |
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| Authors: | Görlitz A Gustavson T L Leanhardt A E Löw R Chikkatur A P Gupta S Inouye S Pritchard D E Ketterle W |
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| Institution: | Department of Physics, MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. a.gorlitz@physik.uni-stuttgart.de |
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| Abstract: | We have investigated the properties of Bose-Einstein condensates of sodium atoms in the upper hyperfine ground state. Condensates in the high-field seeking F=2, m(F)=-2> state were created in a large volume optical trap from initially prepared F=1, m(F)=-1> condensates using a microwave transition at 1.77 GHz. We found condensates in the stretched state F=2, m(F)=-2> to be stable for several seconds at densities in the range of 10(14) atoms/cm(3). In addition, we studied the clock transition F=1, m(F)=0> --> F=2, m(F)=0> in a sodium Bose-Einstein condensate and determined a density-dependent frequency shift of (2.44+/-0.25+/-0.5) x 10(-12) Hz cm(3). |
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