Abstract

The three-pulse photon echo technique has provided significant insight into ultrafast dynamics in a variety of condensed phase systems¹. Clear signatures of non-Markovian dynamics in a dense potassium vapor² provide the opportunity to gain further insight into the correlation function of frequency fluctuations both experimentally and theoretically. Here, experimental three-pulse photon echo peak shifts are compared to calculated peak shifts that include the long-range resonant interactions in a dense atomic vapor within an exciton formalism³. A slow exponential decay in the peak shifts is attributed to long-range resonant interactions.

© 2007 IEEE