Z-scan analytical solutions for thin media with high order refractive nonlinearity and multiphoton absorption

Abstract

Considering that a thin media presents solely one type of nonlinearity, we obtain an analytical solution for far field on-axis Z-scan detection; a second solution is obtained for open aperture case. To find the analytical solutions, we propose a form for the nonlinear high order refractive and multiphoton absorption of the media. Z-scan curves are presented where the nonlinear high order refractive and multiphoton absorption are varied.