TY - JOUR
T1 - All-optical production of L7 i Bose-Einstein condensation using Feshbach resonances
AU - Gross, Noam
AU - Khaykovich, Lev
PY - 2008/2/4
Y1 - 2008/2/4
N2 - We show an all-optical method of making L7 i condensates using the tunability of the scattering length in the proximity of a Feshbach resonance. We report the observation of two Feshbach resonances on the | F=1, mF =0 state. A narrow (broad) resonance of 7 G (34 G) width is detected at 831±4 G (884 -13 +4 G). The position of the scattering length zero crossing between the resonances is found at 836±4 G. The broad resonance is shown to be favorable for runaway evaporation which we perform in a crossed-beam optical-dipole trap. Starting directly from the phase-space density of a magneto-optical trap we observe a Bose-Einstein condensation threshold in less than 3 s of forced evaporation.
AB - We show an all-optical method of making L7 i condensates using the tunability of the scattering length in the proximity of a Feshbach resonance. We report the observation of two Feshbach resonances on the | F=1, mF =0 state. A narrow (broad) resonance of 7 G (34 G) width is detected at 831±4 G (884 -13 +4 G). The position of the scattering length zero crossing between the resonances is found at 836±4 G. The broad resonance is shown to be favorable for runaway evaporation which we perform in a crossed-beam optical-dipole trap. Starting directly from the phase-space density of a magneto-optical trap we observe a Bose-Einstein condensation threshold in less than 3 s of forced evaporation.
UR - http://www.scopus.com/inward/record.url?scp=40149084353&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.77.023604
DO - 10.1103/PhysRevA.77.023604
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AN - SCOPUS:40149084353
SN - 1050-2947
VL - 77
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
M1 - 023604
ER -