Abstract
We have recently demonstrated rf resonance experiments on Na atoms contained in a magnetic trap.1,2 Sequential rf pulses with appropriate frequencies were applied to a sample of ~2×1010 Na atoms (confined in an ~100-cm3 volume) to transfer population between the four trapped magnetic substates. The relative populations of the magnetic substates were detected by sending a weak narrowly collimated probe laser beam along the axis of the trap and monitoring the induced fluorescence with a photodiode (placed along the wall of the trap enclosure) located at the longitudinal magnetic field minimum. Hence we are sensitive only to light emanating from the small fraction of atoms near the magnetic field minimum.
© 1989 Optical Society of America
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