基于拉曼散射技术的Ge-Se二元硫系玻璃光致结构变化研究

he series of GeSex(x=4、6、7、8、9) glasses were prepared via Melting-quenching method. The glass-forming ability and the optical performance was characterized by X-Ray Diffraction, Visible-Near Infrared spectra and Raman spectra. The evolvement of microstructure of Ge-Se binary chalcogenide glass caused by the laser irradiation was systematically explored via Raman scattering technique. Raman spectra and surface morphology of the glass sample changed obviously when irradiated by band-gap light or sub-band-gap light. These results shows that a light-induced structural change has happened and it tends to be saturated with the increasing of the time.