Surface emitting laser and surface emitting laser array

A surface emitting laser array, comprising:

• a substrate comprising a plurality of convex parts on a surface of the substrate;
• and
• a vertical resonator structure on the substrate, wherein the vertical resonator structure includes an active layer, a first semiconductor layer, and a current blocking layer, wherein:
• the first semiconductor layer comprises a semiconductor layer of a first conductivity type,
• the first semiconductor layer includes a plurality of step structure parts, each step structure part of the plurality of step structure parts faces a corresponding convex part of the plurality of convex parts,
• each step structure part of the plurality of step structure parts has a shape conforming to the corresponding convex part of the plurality of convex parts, and
• the current blocking layer comprises a semiconductor layer of a second conductivity type different from the first conductivity type,
• the current blocking layer has an opening for each of the plurality of step structure parts, and
• the opening has an inner peripheral surface in contact with an outer peripheral surface of a corresponding step structure part of the plurality of step structure parts, and
• the opening has a same shape as the corresponding convex part in plan view.