Ultrafast optical spectroscopy of spectral fluctuations in a dense atomic vapor

V. O. Lorenz, S. Mukamel, W. Zhuang, S. T. Cundiff

Research output: Contribution to journalArticlepeer-review

Abstract

Transient four-wave mixing experiments with 100fs pulses in a dense potassium vapor probe the electronic energy fluctuations that lead to optical decoherence. Echo-peak shift experiments yield a biexponential two-time correlation function of energy level fluctuations. Molecular dynamics simulations show that the slow component is a many-body excitonic contribution arising from long-range resonant interactions. The decay of the correlation function occurs on comparable time scales in theory and experiment.

Original languageEnglish (US)
Article number013603
JournalPhysical review letters
Volume100
Issue number1
DOIs
StatePublished - Jan 10 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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