Fiber laser system
AssigneeIpg Photonics Corporation
InventorsValentin P. Gapontsev, Valentin Fomin, Nicholai Platonov
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Abstract
A powerful fiber laser system is configured with at least one large-area multi-clad rare-earth doped fiber, which is configured with a MM core capable of propagating a single mode laser emission at a first wavelength, and with at least one pumping assembly capable of generating an optical pump output at a wavelength shorter than the first wavelength of the rare-earth doped fiber. The pumping assembly has a plurality SM fiber lasers coupled to a SM-MM combiner which is operative to lunch the pump output into the cladding of the rare-earth doped fiber so that the powerful fiber laser system is operative to deliver a power of up to 20 kW.
Claims14
A fiber laser system comprising:
- at least one active fiber (AF) having a MM core configured to propagate a fundamental mode without exiting higher modes and operative to lase an optical system output at a first wavelength;
- at least one pumping assembly comprising a plurality of SM pump fiber lasers each operative to emit an optical pump output at a second wavelength shorter than the first wavelength of the at least one AF;
- and
- a combiner configured to combine the optical pump outputs of the plurality of SM fiber lasers into a pump output beam launched into the at least one AF.
Dependencies are inferred from the claim text.