(Color online) Schematic representation of the experimental configuration. The face shows the cross section of a poled glass specimen studied by micro-Raman spectroscopy in the backscattering geometry. V and H indicate the polarization of the exciting laser beam.
(Color online) Micro-Raman spectra collected from the cross section at distances, , from the anode surface of a poled glass with composition bpn40.
(Color online) Micro-Raman spectra measured within the NLO layer with two polarization configurations.
(Color online) Micro-Raman spectra of three poled glass compositions recorded in the NLO layer and in the bulk.
(Color online) Micro-Raman difference spectra of three poled glass compositions, obtained by subtracting the normalized spectra collected in the NLO layer and in the bulk of each glass.
(Color online) Integrated Raman intensity (ranging from ) in steps of from the anode side of the bpn40 poled glass.
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