Patent ID: 8773764

Claim:
A fiber laser system for processing materials, comprising: a plurality of fiber laser sources generating respective outputs at different wavelengths; a beam combiner configured with: a housing, a plurality of spaced first emitters mounted to the housing and extending along respective first parallel axes, the first emitters being configured to receive respective outputs from the fiber laser sources and output respective first beams at respective different wavelengths, a second emitter mounted to the housing coaxially with one of the first emitters and spaced from the first emitters, the second emitter receiving selected first beams so as to emit a single output beam for incidence upon an external workpiece to be processed, and a selecting system within the housing configured with: a first fully reflective mirror configured to redirect the first beam from at least one another of the first collimators transversely to the first parallel axes, a mirror mount rotatably mounted in the housing, and a plurality of second spaced mirrors mounted to and rotatable with the mirror mount, the mirror mount selectively displacing each of the second mirrors into a working position in which a selected second mirror intersects the first axis of the one second emitter downstream therefrom, wherein one of the second mirrors is configured for a sequential combination of the first outputs into the single output beam and another second mirror is configured for a simultaneous combination of the first outputs into the single output.