Kilowatt-class diode laser system

1. A multi-wavelength laser system comprising:

a wavelength beam combining resonator comprising:

a first and second stack of laser emitters,

a spatial interleaver configured to interleave the emitted beams from the first and second stack of laser emitters,

a cylindrical transform optic positioned to receive the beams and overlap the beams along one dimension onto a dispersive element,

a waveplate positioned between the transform optic and dispersive element,

a second optical system positioned between the dispersive element and a partially-reflective output coupler, wherein feedback from the output coupler forms a resonator with the back facets of each of the emitters, and wherein the output coupler transmits a multi-wavelength beam; and

a post resonator including:

a polarization multiplexer,

optical reconfiguration element,

anamorphic element, and

fiber-optic module.

2. The laser system of claim 1 , wherein the first optical system includes at least three optical elements L 1 , L 2 , and L 3 , and wherein the ratio of the focal lengths of L 1 :L 3 are in range of 0.5 to 2.0.

3. The laser system of claim 2 , wherein the ratio of the focal lengths of L 1 :L 2 are in range of 5 to 100.

4. The laser system of claim 1 , wherein the second optical system includes at least three optical elements L 4 , L 5 y , and L 5 x , and wherein the ratio of the focal lengths of L 5 x :L 4 are in the range of 1 to 5.

5. The laser system of claim 4 , wherein the ratio of the focal lengths of L 4 :L 5 y are in range of 2 to 10.

6. The laser system of claim 1 , wherein the first and second stacks each include 15 bars having 19 emitters per bar, wherein each emitter produces a unique wavelength.

7. The laser system of claim 1 , wherein the first and second stacks each include 15 bars having 49 emitters per bar, wherein each emitter produces a unique wavelength.

8. The laser system of claim 1 , wherein at least a kilowatt of power is coupled into an optical fiber.