Absorbance spectra. Samples' thicknesses: 2.1 mm (sample A); 2.0 mm (sample B).
Kerr gate signals for the two samples studied. The inset shows the Kerr signal for a cell with liquid CS2, our reference standard.
Transmitted intensity as a function of the incident laser intensity. Excitation at 532 nm with laser pulses of 80 ps (a) and 250 ns bursts of 80 ps pulses (b). The solid lines represent fits of Eq. (4) to the experimental points.
Compositions and samples' parameters: d is the samples' length, is the linear index of refraction, and is the linear absorption coefficient.
Nonlinear parameters of the samples: | | is the modulus of the nonlinear refractive index, is the two-photon absorption coefficient, and is the free-carriers absorption cross-section.
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