Microstructural modification of chalcogenide glasses by femtosecond laser

Abstract With the irradiation by femtosecond (fs) laser with high repetition rate, GeS 2 micro/nano-crystalline formation and microstructural modification occurred in pseudo-binary GeS 2 –In 2 S 3 glass, while almost no similar change was observed in GeS 2 glass. The addition of In 2 S 3 is beneficial for the precipitation of GeS 2 micro/nano-crystals. It is expected that functional micro/nano-crystals can be controllably prepared in chalcogenide glasses by fs laser irradiation through glass composition design.