Luminescence of Cr4+: Ca2GeO4 films in the near infrared region

Authors
Gorshkov, ON Dianov, EM Zvonkov, NB Maksimov, GA Protopopov, VN Chigirinskii, YI
Citation
On. Gorshkov et al., Luminescence of Cr4+: Ca2GeO4 films in the near infrared region, QUANTUM EL, 30(3), 2000, pp. 261-262
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
QUANTUM ELECTRONICS
ISSN journal
10637818 → ACNP
Volume
30
Issue
3
Year of publication
2000
Pages
261 - 262
Database
ISI
SICI code
1063-7818(200003)30:3<261:LOCCFI>2.0.ZU;2-E
Abstract
The Cr4+:Ca2GeO4 films are produced on fused silica substrates by the metho d of RF magnetron sputtering. Both initial films and those annealed in air at temperatures below 700 degrees C are amorphous. The films annealed at te mperatures from 500 to 700 degrees C exhibit luminescence in the wavelength range from 1200 to 1400 nm upon laser excitation at 980 nm, which suggests that they contain tetravalent chromium ions.