US Patent 7764724 Laser combiner

A laser system. The laser system includes a first laser device configured to emit a first laser beam, a second laser device configured to emit a second laser beam, and a third laser device configured to emit a third laser beam. The laser system also includes a laser combiner configured to receive the first, second, and third laser beams and output the first, second, and third laser beams with less separation downstream of the laser combiner than upstream of the laser combiner.