Patent ID: 9746679
Date: 2017-08-29
CPC Classifications: G02B,H01S,Y10T

Claim:
1. A laser system comprising: a plurality of beam emitters each emitting an individual beam, each beam having a fast-diverging axis and a slow-diverging axis, the plurality of beam emitters being arranged in an array having a lateral dimension; disposed optically downstream of the plurality of beam emitters, a fast-axis collimation (FAC) lens (A) for (i) receiving the emitted beams and (ii) collimating the beams along their fast-diverging axes, and (B) having a lateral dimension rotated at a non-zero angle with respect to the lateral dimension of the plurality of beam emitters; disposed optically downstream of the FAC lens, a beam rotator for (i) rotating the beams and (ii) directing the rotated beams toward a dispersive element; a dispersive element for receiving and dispersing the rotated beams, wherein (i) the rotation of the FAC lens with respect to the plurality of beam emitters causes the rotated beams to at least partially overlap at the dispersive element, and (ii) no focusing optics for overlapping the beams at the dispersive element are disposed between the plurality of beam emitters and the dispersive element; and a partially reflective output coupler for receiving the dispersed beams, reflecting a first portion thereof back toward the dispersive element, and transmitting a second portion thereof as a multi-wavelength output beam.