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Large Mode Area Double Clad Fibers for Pulsed and CW Lasers and Amplifiers

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Large Mode Area Double Clad Fibers for Pulsed and CW Lasers and Amplifiers

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  • Author: David Machewirth, Victor Khitrov, Upendra Manyam, Kanishka Tankala, Adrian Carter, Jaroslaw Abramczyk, Julia Farroni, Douglas Guertin, Nils Jacobson
Developments in manufacture, and devices incorporating, rare earth doped, large-mode area (RE-LMA) double clad fibers have increased greatly over the past few years. Advances in RE-LMA fiber fabrication, including polarization-maintaining (PM) versions, not only enabled the production of large yields of uniform product but has also allowed flexibility of fiber design1 . Laser output powers well exceeding 100 W with diffraction-limited beam quality, from a single RE-double clad fiber, have been demonstrated, as well as multiple-millijoule amplifier peak powers.

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