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Lasing in a Gain-Guided, Index-Antiguided Fiber

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This new approach may provide a path to efficient, single-mode, multikilowatt fiber lasers.

Dr. Michael Bass and Dr. Martin C. Richardson, CREOL

In the past decade and a half, fiber lasers with very high multimode output powers have been developed by doping the core of such fibers with ions that can lase. These fiber lasers are pumped by light from diode-laser arrays that is coupled into both the core and the cladding, exciting ions over the entire length of the fiber. An inherent problem with these powerful lasers is that they cannot readily be made to oscillate in a single transverse mode, so the beam quality is not suitable for some applications. Single-mode oscillation requires a small core, typically 8 to 10 μm in...Read full article

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    Published: July 2007
    Communicationsdiode-laser arraysFeaturesfiber lasersfiber opticsfibersmultimodeLasers

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