Pressure dependence of Brillouin scattering spectra in semiconductors CdS Se1− doped glasses

Abstract In the glasses doped with semiconductors CdSxSe1−x (low-pass sharp-cut filters), the semiconductors in the glass matrix are developed by thermal treatments with various annealing times (ta) and temperatures (Ta). No size effects were previously obtained for Brillouin shifts of these samples. Therefore, Brillouin scattering of the samples with various ta and Ta=700 °C have been investigated under pressure. Any heat treatments made samples slightly soft and the internal strain inside the samples almost vanished. The slopes, d log ω/ d P , were plotted as a function of ta1/3, respectively. It was possible that the slopes indicated a linear increase. This result revealed that the semiconductor micro-crystals in the glasses contributed to the stiffening of the glasses. There seems to be some kind of size effect.