High-power fiber laser employing nonlinear wave mixing with higher-order modes
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United States of America Patent
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Dec 1, 2015
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Jul 2, 2015
app pub date -
Oct 31, 2014
filing date -
May 5, 2012
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Abstract
A high-power fiber laser exploits efficiency and wavelength-conversion of nonlinear wave mixing in a higher-order mode (HOM) fiber providing large effective area and higher-power operation than single-order mode (SMF) fiber. In a “monomode” approach, mixing waves (pump(s), signal, idler) propagate in the same higher-order mode, and in an “intermodal” approach different waves propagate in different modes. The monomode approach can provide high-power wavelength conversion generating output in a desired band where good dopants may be unavailable. The intermodal approach demonstrates coherent combining of outputs of multiple lasers to generate high-power output in a desired band.
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