Patent ID: 8038893
Filing Date: 2011-10-18
Classification: H01L

Abstract:
1. A method for producing a semiconductor optical device, the method comprising: a semiconductor layer growing step of epitaxially growing a plurality of semiconductor layers on one side of a semiconductor substrate; a mask layer forming step of forming a mask layer in a predetermined thickness on an outermost surface of the semiconductor layers so as to expose a tip side of a particle contamination exposing from the outermost surface; a particle contamination removing step of etching the particle contamination with a predetermined etchant, using the mask layer; and a mask layer removing step of removing the mask layer from the outermost surface, after etching the particle contamination, wherein the mask layer forming step comprises: a step of forming an insulating layer on the outermost surface of the semiconductor layers so as to cover the particle contamination; a step of applying a resist layer in a predetermined thickness on the insulating layer by a spinner so as to expose the tip side of the particle contamination covered by the insulating layer; and a step of etching the insulating layer, using the resist layer as a mask, to expose the tip side of the particle contamination from the insulating layer, and wherein the particle contamination removing step comprises removing the resist layer and thereafter etching the particle contamination with the predetermined etchant, using the insulating layer as the mask layer.