Phys. Rev. A 68, 053407 (2003) [4 pages]Autler-Townes spectroscopy of the 5S1/2-5P3/2-44D cascade of cold 85Rb atomsReceived 9 May 2003; published 17 November 2003 We study nonlinear optical effects in the laser excitation of Rydberg states. 5S1/2 and 5P3/2 levels of 85Rb are coupled by a strong laser field and probed by a weak laser tuned to the 5P3/2-44D Rydberg resonance. We observe high contrast Autler-Townes spectra which are dependent on the pump polarization, intensity, and detuning. The observed behavior agrees with calculations, which include the effect of optical pumping. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.68.053407
DOI:
10.1103/PhysRevA.68.053407
PACS:
42.50.Hz, 32.80.Rm, 32.80.Pj
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