HOLMIUM-DOPED FIBER AMPLIFIER WITH EFFICIENT LOW COST CASCADED FIBER LASER PUMPING AND A METHOD THEREFOR
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United States of America Patent
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Issued Date -
Aug 3, 2023
app pub date -
Dec 30, 2022
filing date -
Jan 31, 2022
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Abstract
A Holmium-doped fiber amplifier (HDFA) with cascaded pumping is disclosed. The cascaded pumping has at least two pumping stages arranged so that an emission spectrum of a preceding pumping stage at least partly corresponds to an absorption spectrum of the succeeding pumping stage, and the pumping stages are staggered so that an emission spectrum of the last pumping stage at least partly corresponds to an absorption spectrum of the Holmium-doped fiber.
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