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US 10,241,338 B2Granted
Wavelength beam combining laser systems utilizing lens roll for chief ray focusing
AssigneeTeradiode, Inc.
InventorsMichael Deutsch, Daqing Wang, James Zambuto, Bien Chann, Bryan Lochman
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Abstract
In various embodiments, a wavelength beam combining laser system includes a fast-axis collimation lens that is rotated with respect to a plurality of emitters in order to converge the emitted beams onto a dispersive element and/or reduce the size of the multi-wavelength output beam of the system.
Claims20
A method of laser emission, the method comprising:
- emitting individual beams from each of a plurality of beam emitters, each beam having a fast-diverging axis and a slow-diverging axis;
- rotating the beams and directing the rotated beams toward a dispersive element;
- causing the rotated beams to at least partially overlap at the dispersive element at least in part by rotation of a fast-axis collimation (FAC) lens relative to the plurality of beam emitters;
- dispersing the rotated beams with the dispersive element;
- and
- 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.
3 more elements
A method for configuring a laser system, the method comprising:
- providing a plurality of beam emitters each emitting an individual beam, each beam having a fast-diverging axis and a slow-diverging axis;
- providing, disposed optically downstream of the plurality of beam emitters, a fast-axis collimation (FAC) lens for (i) receiving the emitted beams and (ii) collimating the beams along their fast-diverging axes;
- providing, 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;
- providing a dispersive element for receiving and dispersing the rotated beams;
- providing 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 having a beam size;
- and
- physically rotating the FAC lens with respect to the plurality of beam emitters to (i) cause the beams to at least partially overlap at the dispersive element and (ii) reduce the beam size of the output beam.
4 more elements
Dependencies are inferred from the claim text.