Preparation and characterization studies on ternary Se rich chalcogenide glasses with Ga content for infrared photonics

This work is an approach towards the realization of Se rich chalcogenide glasses with low Ga content for Infrared Photonic applications. The glass ceramics were prepared using melt quenching technique. The amorphous nature of the samples were reinforced with the x-ray diffraction studies. The prepared samples exhibit an excellent transmittance in the mid IR regime except for some impurity absorption peaks. The DSC thermograms were studied and the results suggest a crystallization stability ΔT of all glass samples to be greater than 100°C so that they are not easily prone to devitrification tendency. The correlation among three parameters: glass transition temperature (Tg), average coordination number () and optical band gap (Eg,opt) were explored.