Chromophore orientations in surface relief gratings with second-order nonlinearity as studied by confocal polarized Raman

Article Abstract:

The main point of the investigation is to prepare polar gratings with a spatial modulation of the second-order nonlinearity by using a high dc electric field wire-poling technique and to characterize the chromophore polar orientations by confocal polarized Raman microscopy is described. It is concluded that the chromophore distribution functions are generally broad with strong maxima near plusmn 90 degree in the bottom regions, and they are bimodal and asymmetric with sharp maxima at plusmn 56-60 degree in the peak regions.

Science & research, Research, Raman spectroscopy, Electric fields, Polarization (Electricity)

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Molecular dynamics simulations of polycarbonate doped with Lemke chromophores

Article Abstract:

Molecular dynamics simulations are used for studying polycarbonate doped with Lemke chromophores. The results have shown that for the bulk material, the structure of the host matrix is very important in determining the performance of the electro-optical modulating materials.

Molecular dynamics, Optical properties, Structure

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