Parametric four-wave mixing processes in sodium vapor

Y. Shevy, M. Rosenbluh

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Two types of parametric four-wave mixing are observed when a single intense laser beam propagates through Na vapor near the D1 and D2 resonance lines. The first is related to three-photon scattering, while the second results from the coherent parametric interaction of the laser with excited-state Raman scattering. Identification of the two processes was greatly facilitated by the use of an optical multichannel detector system to observe the total emission spectrum for each individual laser pulse. The experimental conditions that determine whether stimulated emission or one or both of the four-wave mixing processes dominates the emission spectrum are described.

Original languageEnglish
Pages (from-to)257-259
Number of pages3
JournalOptics Letters
Issue number4
StatePublished - Apr 1987


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