Pump-probe spectroscopy of cold 87Rb atoms in various polarization configurations

Ying Cheng Chen*, Yun Wen Chen, Jung-Jung Su, Jeng Yu Huang, Ite A. Yu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


We investigate systematically pump-probe spectroscopy of cold 87Rb atoms produced by a magneto-optical trap. The pump-probe spectra are measured without the presence of the trapping beams or any optical molasses. Various polarization configurations of the probe and pump fields result in very different spectra of probe absorption. The observed spectra exhibit a dispersive profile, a dispersionlike profile, a Lorentzian profile, or a dispersive profile plus a Lorentzian profile. The widths of all the spectral profiles are narrower than the natural linewidth of the excited state. Our work clarifies the mechanisms behind these different spectral profiles and provides essential information for the pump-probe spectroscopy of cold atoms.

Original languageEnglish
Article number043808
Pages (from-to)1-11
Number of pages11
JournalPhysical Review A. Atomic, Molecular, and Optical Physics
Issue number4
StatePublished - Apr 2001

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