| 摘要 |
A method of manufacturing a semiconductor laser element having an enhanced yield ratio is provided. The semiconductor laser element having a cladding layer, an intermediate layer, and a capping layer is manufactured as follows. At the laminating step, a plurality of lamination layers are laminated in a laminating direction. Subsequently, at protruding step, a cladding layer, a capping layer and a precursor of an intermediate layer are formed so that widthwise lengths of the cladding layer and the capping layer become shorter or uniform in the laminating direction, and so that the precursor of an intermediate layer protrudes widthwise from the cladding layer and the capping layer. At removing step, an protrusion of the precursor of the intermediate layer is removed.
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