Laser combiner

1. A laser system, comprising:

a first laser device configured to emit a first laser beam;

a second laser device configured to emit a second laser beam;

a third laser device configured to emit a third laser beam; and

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, and wherein the laser combiner is further configured to reflect at least one of the first laser beam and the second laser beam off a first internal face and to cause at least one of the first and the second laser beams to travel within the laser combiner and to reflect off a second internal face and to exit through an output face;

wherein the output face is configured to produce one or more of a despeckled beam, an optical power that converges light, and an optical power that diverges light; and

wherein the output face includes a micro lens array including a plurality of substantially similar smooth curved surfaces.

2. A laser system, comprising:

a first laser device configured to emit a first laser beam;

a second laser device configured to emit a second laser beam;

a third laser device configured to emit a third laser beam; and

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, and wherein the laser combiner is further configured to reflect at least one of the first laser beam and the second laser beam off a first internal face and to cause at least one of the first and the second laser beams to travel within the laser combiner and to reflect off a second internal face and to exit through an output face;

wherein the output face is configured to produce one or more of a despeckled beam, an optical power that converges light, and an optical power that diverges light; and

wherein the output face includes a diffusion surface having a volumetric diffuser material and surface structures that curve light to diverge it from its collimated state.

3. The laser system of claim 1 , wherein the laser combiner is configured to output the first, second, and third laser beams with substantially parallel exit paths.

4. The laser system of claim 1 , wherein the laser combiner is configured to output the first, second, and third laser beams with substantially overlapping exit paths.

5. The laser system of claim 1 , wherein the laser combiner is made from at least one of a substantially homogeneous plastic and a substantially homogeneous glass.

6. The laser system of claim 2 , wherein the laser combiner is configured to output the first, second, and third laser beams with substantially parallel exit paths.

7. The laser system of claim 2 , wherein the laser combiner is configured to output the first, second, and third laser beams with substantially overlapping exit paths.

8. The laser system of claim 2 , wherein the laser combiner is made from at least one of a substantially homogeneous plastic and a substantially homogeneous glass.