TY - JOUR
T1 - Pulsed polarization gradient cooling in an optical dipole trap with a Laguerre-Gaussian laser beam
AU - Torii, Y.
AU - Shiokawa, N.
AU - Hirano, T.
AU - Kuga, T.
AU - Shimizu, Y.
AU - Sasada, H.
PY - 1998/1/1
Y1 - 1998/1/1
N2 - We utilized a blue-detuned Laguerre-Gaussian (doughnut) laser beam to trap cold rubidium atoms by optical dipole force. "Pulsed" polarization gradient cooling was applied to the trapped atoms to suppress the trap loss due to heating caused by random photon scattering of the trapping light. In this trap about 108 atoms were initially captured and the trap lifetime was 1.5 s, which was consistent with losses due to background gas collisions. This trap can readily be applied to atom guiding, compression, and evaporative cooling.
AB - We utilized a blue-detuned Laguerre-Gaussian (doughnut) laser beam to trap cold rubidium atoms by optical dipole force. "Pulsed" polarization gradient cooling was applied to the trapped atoms to suppress the trap loss due to heating caused by random photon scattering of the trapping light. In this trap about 108 atoms were initially captured and the trap lifetime was 1.5 s, which was consistent with losses due to background gas collisions. This trap can readily be applied to atom guiding, compression, and evaporative cooling.
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U2 - 10.1007/s100530050088
DO - 10.1007/s100530050088
M3 - Article
AN - SCOPUS:0004738920
SN - 1434-6060
VL - 1
SP - 239
EP - 242
JO - European Physical Journal D
JF - European Physical Journal D
IS - 3
ER -