Effective room-temperature luminescence in annealed chromium-doped silicate optical fibers

Vladislav V. Dvoyrin*, Valery M. Mashinsky, Vladimir B. Neustruev, Evgeny M. Dianov, Alexei N. Guryanov, Andrei A. Umnikov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The influence of annealing at 1000 °C on the absorption and luminescence spectra of chromium in aluminosilicate and gallium silicate fibers at temperatures of 77 and 300 K is investigated. The spectra of initially weak luminescence with a maximum at 1100 nm and a quantum yield of approximately 10-5 at 300 K shift to the 790-880-nm range in annealed fibers. After annealing the quantum yield increases by as much as 10%. The luminescence lifetime is found to be approximately 20 μs. The luminescence changes are explained by a rearrangement of the nearest environment and recharge of chromium ions (Cr4+ to Cr3+). The results obtained hold promise for the creation of tunable and ultrashort pulse fiber lasers.

Original languageEnglish
Pages (from-to)280-283
Number of pages4
JournalJournal of the Optical Society of America B: Optical Physics
Issue number2
Publication statusPublished - 1 Feb 2003


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