Nonlinear-optical response of porous-glass-based composite materials

Abstract

We formed composite materials with geometries approximating that of the Bruggeman model by filling the pores of a porous glass with optically nonlinear fluids spanning a range of linear refractive indices. The effective linear refractive indices of the composites were measured with a Mach-Zehnder interferometer. The effective nonlinear refractive indices were determined by the Z-scan method. In both cases good agreement between the experimental data and theoretical predictions was found.

Optical Properties of Zn1-xMgxSe Epilayers Studied by Spectroscopy Methods

“…on the Mg content No significant improvement in the fit was obtained by the use of a more general five-parameter, two-pole equation [8].…”

“…In this work the refractive indices were fitted to a one-pole Sellmeier equation of the form [8] The parameters used to fit the data for the Ζn1-x Mgx Se layers are given in Table. The behaviour of the parameters A, B and C, which depend on the Mg content x and temperature T, has been derived by fitting them with a parabolic dependence . on the Mg content No significant improvement in the fit was obtained by the use of a more general five-parameter, two-pole equation [8].…”

Enhancement of nonlinear optical properties of compounds of silica glass and metallic nanoparticle

“…The nonlinear optical properties depend on the size of metallic nanoparticles (MNPs) [16,17]. Flytzanis et al have carried out a series of investigations on nonlinear mixing signals produced by a colloidal medium [12,[18][19][20][21].…”

Optical nonlinearities of nanocomposite constituents selectively addressed by polarization‐controlled coherent anti‐Stokes Raman scattering

“…Porous glasses have been employed earlier for effective-medium-controlled third-harmonic generation. 29,46 In this work, the frequencies of pump fields are chosen in such a way as to resonantly excite Raman-active vibrations of toluene molecules. The ratio of CARS signal components related to toluene molecules and the porous glass host is controlled by varying the orientation of the polarization analyzer with respect to the polarization vectors of the linearly polarized pump fields.…”