Photo-induced phenomena in GeO2 glass

Nobuaki Terakado, Keiji Tanaka

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Photo-induced changes in GeO2 glass have been studied in terms of its optical and structural properties. Band-gap excitation gives rise to modifications in mid-gap optical absorption and photo-luminescence spectra. It also produces electron-spin signals at g ≃ 1.995 and 2.008. Raman-scattering spectrum becomes sharper, X-ray diffraction patterns show a disappearance of a crystalline peak, and the illuminated surfaces expand. These observations can be accounted for by assuming bond transformations from rutile-like to defective quartz-like structures and/or from small to large rings. These photo-induced changes in GeO2 are discussed in comparison with those in SiO2 and GeS2.

Original languageEnglish
Pages (from-to)3815-3822
Number of pages8
JournalJournal of Non-Crystalline Solids
Volume352
Issue number36-37
DOIs
Publication statusPublished - 2006 Oct 1

Keywords

  • Absorption
  • Chalcogenides
  • Defects
  • Electron spin resonance
  • Germania
  • Glasses
  • Laser-matter interactions
  • Luminescence
  • Optical spectroscopy
  • Photo-induced effects
  • Radiation effects
  • Raman spectroscopy
  • Raman-scattering
  • Silica
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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