Devitrification of ultrafast laser plasma produced metastable glass layer. (1st April 2017)

• Record Type: Journal Article
• Authors: Chandrappan, Jayakrishnan; Khetan, Vishal; Ward, Michael; Murray, Matthew; Jose, Gin
• Is Part Of: Scripta materialia. Number 131(2017)
• Page Start: 37
• Page End: 41
• Publication Date: 2017-04-01
• Subjects: Erbium doped silicate -- Ultrafast laser -- Optical materials -- Optical amplifiers; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.12.028
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Erbium-doped tellurite modified silica (EDTS) is a newly formulated silicate glass that has the potential to realize on-chip optical amplifiers. The devitrification process of EDTS layer on host silica glass has been studied in the temperature range 300 °C–1000 °C. In-situ high-temperature X-ray diffraction, selective area electron diffraction and high-resolution transmission electron microscopy revealed the amorphous phase of EDTS as-fabricated up to 600 °C and rapid irreversible crystalline phase developments above 600 °C, contrasting the host silica. Distinct structural evolutions of EDTS with the variation in temperature were observed, including a complete evaporation of TeO2 at 800 °C from the matrix. Graphical abstract: