Patent ID: 9065239
Filing Date: 2015-06-23
Classification: H01S

Abstract:
1. A top emitting VCSEL array device, comprising: a grounded substrate; one or more grounding pads electrically connected to the grounded substrate; and a plurality of VCSEL devices, each VCSEL device among the plurality of VCSEL devices configured to include a mesa on top of the grounded substrate, each mesa being configured to include a lower mirror formed on top of and in contact with the grounded substrate, a first region formed on top of and in contact with the lower mirror, an upper mirror, and an active region configured to generate light positioned between the first region and the upper mirror, each VCSEL device further including a first metal contact pad formed over at least a portion of and in electrical contact with the upper mirror, an aperture formed on the upper mirror to emit the light generated by the active region, a mesa heat sink structure formed over at least a portion of the first metal contact pad and configured to increase a mass of the mesa, a conductive pad formed above and in electrical contact with at least a portion of the heat sink structure, a dielectric layer formed over the conductive pad, and a heat spreading substrate placed over the dielectric layer and electrically isolated from but in thermal contact with the conductive pad.