Broad area laser pump combiner
AssigneeKaiam Corp.
InventorsBardia Pezeshki, John Heanue
Life of this patent
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Abstract
Multiple broad area lasers are coupled to a planar lightwave circuit, where the waveguides come together to form a single wide emitting aperture. A tapered lens is used at the output of the planar lightwave circuit to transform the highly asymmetric mode into a conventional round mode. This configuration allows much higher “brightness”, allowing 10 or more 100 um wide broad area lasers to be coupled into a single 100 um core multimode fiber. This is considerably more efficient than the standard method of combining a single 100 um wide broad area laser to a 100 um core multimode fiber.
Claims19
A broad area laser device, comprising:
- a plurality of broad area lasers;
- a planar lightwave circuit (PLC) to receive light from the lasers;
- and
- a flattened tapered fiber to receive light from the PLC.
A broad area laser device, comprising:
- a plurality of broad area laser assemblies, each including a broad area laser, a first lens to collimate light of the broad area laser in a first axis, and a second lens to collimate light of the broad area laser in a second axis;
- a coupling lens to couple light of the broad area lasers into an output;
- and
- a mirror structure to direct light of the broad area lasers to the coupling lens.
Dependencies are inferred from the claim text.