Transient four-wave mixing in saturable media with a nonlinear refractive index

  • De Souza P
  • Nader G
  • Catunda T
 et al. 
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Abstract

We study the transient behaviour of a degenerate four-wave mixing process in a saturable nonlinear medium where the laser induced refractive index change is given by Δn = n2I/(1+I/Is). The theoretical model we develop can be applied for any complex value of n2which contains absorptive, dispersive or mixed components. This model explains very well our experimental results in GdAlO3:Cr3+, using n2and Isvalues that are in good agreement with previous measurements.

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