Nonlinear magneto-optical rotation and Zeeman and hyperfine relaxation of potassium atoms in a paraffin-coated cell
- Department of Physics, University of California, Berkeley, California 94720-7300 (United States)
- Centrum Badan Magnetooptycznych, Instytut Fizyki im. M. Smoluchowskiego, Uniwersytet Jagiellonski, Reymonta 4, 30-059 Krakow (Poland)
- Advanced Light Source Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Nonlinear magneto-optical Faraday rotation (NMOR) on the potassium D1 and D2 lines was used to study Zeeman relaxation rates in an antirelaxation paraffin-coated 3-cm-diameter potassium vapor cell. Intrinsic Zeeman relaxation rates of {gamma}{sup NMOR}/2{pi}=2.0(6) Hz were observed. The relatively small hyperfine intervals in potassium lead to significant differences in NMOR in potassium compared to rubidium and cesium. Using laser optical pumping, widths and frequency shifts were also determined for transitions between ground-state hyperfine sublevels of {sup 39}K atoms contained in the same paraffin-coated cell. The intrinsic hyperfine relaxation rate of {gamma}{sub expt}{sup hf}/2{pi}=10.6(7) Hz and a shift of -9.1(2) Hz were observed. These results show that adiabatic relaxation gives only a small contribution to the overall hyperfine relaxation in the case of potassium, and the relaxation is dominated by other mechanisms similar to those observed in previous studies with rubidium.
- OSTI ID:
- 20974768
- Journal Information:
- Physical Review. A, Vol. 74, Issue 5; Other Information: DOI: 10.1103/PhysRevA.74.053415; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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