In this paper we report on the first purely ``pump-probe'' nonlinear laser spectroscopy results in a slow atomic beam. We have observed Raman, Rayleigh, and recoil-induced resonances (RIR) in a continuous beam of slow and cold cesium atoms extracted from a two-dimensional (2D) magneto-optical-trap (MOT) with the moving molasses technique. The RIR enabled us to measure the velocity distribution, therefore the average speed (0.6--4 m/s) and temperature (50--500 \ensuremath{\mu}K) of the atomic beam. Compared to time of flight, this technique has the advantage of being local, more sensitive in the low-velocity regime $(v<1 \mathrm{m}/\mathrm{s}),$ and it gives access to transverse velocities and temperatures. Moreover, it may be extended to measure atomic velocities in the 2D MOT source of the atomic beam.In this paper we report on the first purely ``pump-probe'' nonlinear laser spectroscopy results in a slow atomic beam. We have observed Raman, Rayleigh, and recoil-induced resonances (RIR) in a continuous beam of slow and cold cesium atoms extracted from a two-dimensional (2D) magneto-optical-trap (MOT) with the moving molasses technique. The RIR enabled us to measure the velocity distribution, therefore the average speed (0.6--4 m/s) and temperature (50--500 \ensuremath{\mu}K) of the atomic beam. Compared to time of flight, this technique has the advantage of being local, more sensitive in the low-velocity regime $(v<1 \mathrm{m}/\mathrm{s}),$ and it gives access to transverse velocities and temperatures. Moreover, it may be extended to measure atomic velocities in the 2D MOT source of the atomic beam.

Physical Review ASep 1, 200116 citations

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Jul 5, 20170 citations

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MILLIMETER-WAVE SPECTROSCOPY OF COLD RB $^{85}$ ATOMSMILLIMETER-WAVE SPECTROSCOPY OF COLD RB$^{85}$ ATOMS

Jianing Han, Yasir Jamil, Paul J. Tanner +2 more

Author Institution: Department of Physics, University of Virginia, McCormick Road, Charlottesville, Virginia 22903

Jan 1, 20060 citations

(v<1 \mathrm{m}/\mathrm{s}),

and it gives access to transverse velocities and temperatures. Moreover, it may be extended to measure atomic velocities in the 2D MOT source of the atomic beam.

MILLIMETER-WAVE SPECTROSCOPY OF COLD RB

^{85}

ATOMS