TY - JOUR
AU - X. Xu
AU - T. Loftus
AU - J. Dunn
AU - Chris Greene
AU - John Hall
AU - Alan Gallagher
AU - Jun Ye
AB - We report the first experimental study of sub-Doppler cooling in alkaline earth atoms (87Sr) enabled
by the presence of nuclear spin-originated magnetic degeneracy in the atomic ground state. Sub-Doppler
cooling in a (\sigma+) - (\sigma-) configuration is achieved despite the presence of multiple, closely spaced excited
states. This surprising result is confirmed by an expanded multilevel theory of the radiative cooling
force. Detailed investigations of system performance have shed new insights into ((\sigma+) - (\sigma-)) cooling
dynamics and will likely play an important role in the future development of neutral atom-based
optical frequency standards.
BT - Physical Review Letters
DA - Jan-05-2003
DO - 10.1103/PhysRevLett.90.193002
N2 - We report the first experimental study of sub-Doppler cooling in alkaline earth atoms (87Sr) enabled
by the presence of nuclear spin-originated magnetic degeneracy in the atomic ground state. Sub-Doppler
cooling in a (\sigma+) - (\sigma-) configuration is achieved despite the presence of multiple, closely spaced excited
states. This surprising result is confirmed by an expanded multilevel theory of the radiative cooling
force. Detailed investigations of system performance have shed new insights into ((\sigma+) - (\sigma-)) cooling
dynamics and will likely play an important role in the future development of neutral atom-based
optical frequency standards.
PY - 2003
T2 - Physical Review Letters
TI - Single-Stage Sub-Doppler Cooling of Alkaline Earth Atoms
VL - 90
SN - 0031-9007
ER -