Patent ID: 7960195

Claim:
A method of manufacturing a laser diode array comprising: forming sequentially, by crystal growth from a first substrate side, a peel layer and a vertical resonator structure, the peel layer including an oxidizable material, etching selectively the peel layer and the vertical resonator structure, forming a columnar shape; oxidizing the peel layer and from a side face of the columnar shape, peeling the vertical resonator structure from the first substrate; and jointing the vertical resonator structure obtained by the peeling step to a surface of a metal layer of a second substrate, wherein the vertical resonator structure has a layer to be oxidized containing a material having the fastest oxidation rate in the vertical resonator structure, and wherein in the oxidizing step, a side face of the layer to be oxidized is coated with a protective film and the side face of the peel layer is not coated with the protective film, allowing the peel layer to be oxidized from the side face.