Photo-induced phenomena in GeO2 glass

Nobuaki Terakado; Keiji Tanaka

doi:10.1016/j.jnoncrysol.2006.06.018

Photo-induced phenomena in GeO₂ glass

Nobuaki Terakado, Keiji Tanaka

ENG - Applied Physics

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	3815-3822
Number of pages	8
Journal	Journal of Non-Crystalline Solids
Volume	352
Issue number	36-37
DOIs	https://doi.org/10.1016/j.jnoncrysol.2006.06.018
Publication status	Published - 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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title = "Photo-induced phenomena in GeO2 glass",

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.",

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",

author = "Nobuaki Terakado and Keiji Tanaka",

note = "Funding Information: The authors thank Professor H. Hosono and Dr A. Saitoh for ESR measurements and Dr T. Gotoh for photo-deflection spectroscopy measurements. The author (N.T.) also thanks financial supports from the 21st century Centre-of-Excellence program {\textquoteleft}Topological Science and Technology{\textquoteright} by the Ministry of Education, Culture, Sports, Science and Technology of Japan. ",

year = "2006",

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doi = "10.1016/j.jnoncrysol.2006.06.018",

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AU - Terakado, Nobuaki

AU - Tanaka, Keiji

N1 - Funding Information: The authors thank Professor H. Hosono and Dr A. Saitoh for ESR measurements and Dr T. Gotoh for photo-deflection spectroscopy measurements. The author (N.T.) also thanks financial supports from the 21st century Centre-of-Excellence program ‘Topological Science and Technology’ by the Ministry of Education, Culture, Sports, Science and Technology of Japan.

PY - 2006/10/1

Y1 - 2006/10/1

N2 - 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.

AB - 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.

KW - Absorption

KW - Chalcogenides

KW - Defects

KW - Electron spin resonance

KW - Germania

KW - Glasses

KW - Laser-matter interactions

KW - Luminescence

KW - Optical spectroscopy

KW - Photo-induced effects

KW - Radiation effects

KW - Raman spectroscopy

KW - Raman-scattering

KW - Silica

KW - X-ray diffraction

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DO - 10.1016/j.jnoncrysol.2006.06.018

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VL - 352

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EP - 3822

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

SN - 0022-3093

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