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Optics and Spectroscopy

Observation of the hyperfine polarization and alignment in the spin-exchange collisions of polarized Cs and Rb atoms

Sergei P. Dmitriev, N. A. Dovator, Victor A. Kartoshkin, A. I. Okunevich

Published Nov 1, 1994• 2 citations
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We perform optical magnetic-resonance (MR) imaging of Cs atoms that are polarized by the transfer from the polarized Xe or Rb atoms in a glass cell as well as by direct optical pumping. With MR images of Cs by alternate optical pumping and detection the distribution of polarized Xe or Rb of low gas pressure is observed in a weak magnetic field. We also discuss the effect of the spin-relaxation and the spin-exchange collisions between Cs, Xe, and Rb atoms on the spatial resolution of MR images of the diffusing Cs atoms.

Journal of the Optical Society of America B•Feb 1, 2000•7 citations
The transfer of nutating spin polarizations between 85 Rb and 133 Cs atoms is observed for the first time. Maximum transfer occurs when the nutation frequencies are made equal in the rotating frames. The nutating spin polarization of 85 Rb atoms is generated by the periodic excitation of the pumping light and the spin polarization transferred to 133 Cs is observed through the Faraday rotation of a probe beam. The observed time evolutions of the spin polarizations are found to be in good agreement with the results of theoretical calculations based on the Bloch type equation of motion including the effects of optical pumping and spin exchange collisions.
We perform optical magnetic-resonance (MR) imaging of Cs atoms that are polarized by the transfer from the polarized Xe or Rb atoms in a glass cell as well as by direct optical pumping. With MR images of Cs by alternate optical pumping and detection the distribution of polarized Xe or Rb of low gas pressure is observed in a weak magnetic field. We also discuss the effect of the spin-relaxation and the spin-exchange collisions between Cs, Xe, and Rb atoms on the spatial resolution of MR images of the diffusing Cs atoms.