Multi-wavelength adjustable-radial-mode fiber laser
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United States of America Patent
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May 11, 2021
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Mar 11, 2021
app pub date -
Sep 5, 2019
filing date -
Sep 5, 2019
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Abstract
A high-power fiber laser produces a compound output beam having a center beam and an annular beam. The center beam and the annular beam are independently adjustable in power and wavelength. The output beam is delivered from an output optical fiber having a center core and a concentric annular core. A fundamental beam generated by a seed laser is amplified by a fiber amplifier and partially converted to a second-harmonic beam by a second-harmonic generator. The residual fundamental beam and second-harmonic beam are separated, attenuated, and selectively coupled into the cores of the output optical fiber.
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