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Demonstrates focusing effects of dipole forces on neutral atoms, suggesting new optical trapping methods.
For sodium atoms in an atomic beam, we demonstrate focusing, defocusing, and steering caused by the transverse dipole forces exerted by the radial intensity gradient of a superimposed and co-propagating resonant cw light beam. Dipole radiation-pressure forces differ from the forces due to spontaneous emission and are needed to achieve optical traps for neutral atoms.
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Bjorkholm et al. (1978) studied this question.
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