Bismuth-doped germanosilicate fibre laser with 20-W output power at 1460 nm

Journal Article · Sun Jul 31 04:00:00 EDT 2011 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2011V041N07ABEH014668· OSTI ID:21552652

Firstov, Sergei V; Shubin, Aleksei V; Khopin, V F; Mel'kumov, Mikhail A; Bufetov, Igor' A; Medvedkov, O I; Gur'yanov, Aleksei N; Dianov, Evgenii M

We report the first cw bismuth - germanium codoped silica fibre laser with an output power above 20 W at 1460 nm and 50% optical efficiency. The laser operates on a transition between energy levels of bismuth-related active centres associated with silicon. The incorporation of a small amount ({approx}5 mol %) of germanium into the core of bismuth-doped silica fibre has little effect on its luminescence spectrum but reduces optical losses, which limit the laser efficiency. (letters)

• OSTI ID: 21552652
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 7 Vol. 41; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH
DOPED MATERIALS
EFFICIENCY
ELEMENTS
EMISSION
ENERGY LEVELS
FIBERS
GERMANIUM
LASERS
LUMINESCENCE
MATERIALS
METALS
MINERALS
OPTICAL FIBERS
OXIDE MINERALS
PHOTON EMISSION
SEMIMETALS
SILICA
SILICON
SPECTRA