Optics Letters · 2001 · 24 citations · 14 references
Natural SciencesMaterials SciencePhysicsOptical MaterialsOpticsSpectroscopyAbsorption SpectroscopyNonlinear Optical MaterialsNonlinear OpticsOptical Properties Of MaterialsOptical SpectroscopyRefractive IndexNonlinear AbsorptionNonlinear Optical PropertiesNonlinear Optical SpectroscopyNonlinear Refractive IndexNonlinear SpectroscopyNonlinear SusceptibilityThird-order Nonlinear SusceptibilityThree-photon Absorption
Femtosecond transient absorption pump-probe spectroscopy has been used to study the third- and fifth-order nonlinear susceptibility of UV-grade fused silica. Theoretical simulations support the experimental evidence of interference between the third- and fifth-order contributions to the signal. Approximate values of the second-order nonlinear refractive index n(4) and of the three-photon absorption coefficient gamma are obtained.
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