Cladding-pumped 3-level fiber laser/amplifier

An optically active fiber (30) is disclosed for making a fiber laser (18) or an amplifier (16). This double-clad structured active fiber (30) has a core (34), doped with an optically excitable ion having a three-level transition. The core (34) has a core refractive index and a core cross-sectional a...

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Main Authors TRUESDALE, CARLTON MAURIE, ELLISON, ADAM JAMES GILMAR, MINELLY, JOHN DOUGLAS, ZENTENO, LUIS ALBERTO, KUKSENKOV, DMITRI VLADISLAVOVICH, DENJNEKA, MATTHEW JOHN
Format Patent
LanguageEnglish
French
German
Published 02.10.2002
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary:An optically active fiber (30) is disclosed for making a fiber laser (18) or an amplifier (16). This double-clad structured active fiber (30) has a core (34), doped with an optically excitable ion having a three-level transition. The core (34) has a core refractive index and a core cross-sectional area. An inner cladding (32) surrounds the core (34). The inner cladding (32) has an inner cladding refractive index less than the core refractive index, an inner cladding cross-sectional area between 2 and 25 times greater than that of the core cross-sectional area, and an aspect ratio greater than 1.5:1. An outer cladding (36) surrounds the inner cladding (32) and has an outer cladding refractive index less than the inner cladding refractive index.
Bibliography:Application Number: EP20020003882