Ultrafast Laser Direct-Writing of Self-Organized Microstructures in Ge-Sb-S Chalcogenide Glass

The structuring of mid-IR materials, such as chalcogenide glass (ChG), at the micro and nano scales, is high interest for fabrication photonic devices in general, spectroscopy applications particular. One efficient method producing regular patterns with a sub-micron to micron length scale through self-organization processes occurring during femtosecond laser exposure. These occur broad set where self-organized can be found not only on surface but also within material volume. This study specifically investigates case (Ge 23 Sb 7 S 70 ) exposed pulses, inducing pulse-to-pulse nanostructure formation that correlated network structural evolution using Raman well morphological elemental microscopy analysis.