Resonant nonlinear refraction of 4.3-μm light in CO2 gas

Academic Article


  • We use time- and frequency-resolved measurements of self-focusing and self-defocusing of 4.3-μm radiation in CO2 gas to study the resonant nonlinear optical response in the vicinity of individual rovibrational lines. Measurements over a range of lines on the 4P and 4R branch of the 000-001 transition indicate that the nonlinear response of CO2 is strongly affected by power broadening, resulting in a sign reversal of the nonlinearity as compared to that of a saturable two-level system.
  • Published In

  • Physical Review A  Journal
  • Digital Object Identifier (doi)

    Pubmed Id

  • 17955307
  • Author List

  • Pigeon JJ; Tovey D; Tochitsky SY; Louwrens GJ; Ben-Zvi I; Martyshkin D; Fedorov V; Karki K; Mirov S; Joshi C
  • Volume

  • 100
  • Issue

  • 1