Fiber laser system and method
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United States of America Patent
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Oct 20, 2015
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N/A
app pub date -
Mar 17, 2015
filing date -
Mar 17, 2015
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Abstract
A fiber laser system includes at least one optical fiber with a core and a cladding and is operative at a first wavelength larger than 2000 nm. The operative first wavelength is preferably chosen to maximize transmission through the atmosphere. At least one optical pumping system includes one or more pumping fiber lasers also doped with thulium for pumping the optical fiber. The pumping system is operative at a second, shorter wavelength close to the first wavelength for low quantum defect pumping. The core of the optical fiber is doped with thulium at a doping concentration greater than one weight % to reduce absorption losses in the core.
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