Patent ID: 7098063
Filing Date: 2006-08-29
Classification: B82Y,G11B,H01L,H01S

Abstract:
1. A method of manufacturing a semiconductor laser device having a first laser part and a second laser part for emitting laser beams of different wavelengths, the method comprising: a first step of stacking thin films of group-III nitride compound semiconductors containing at least one selected from the group consisting of aluminum (Al), gallium (Ga), and indium (In), and nitrogen (N) on a sapphire substrate, having a plurality of waveguides for a plurality of said first laser parts, and forming a first adhesive layer thereon to fabricate a first intermediate body; a second step of stacking thin films of group III–V compound semiconductors containing at least one selected from the group consisting of aluminum (Al), gallium (Ga), and indium (In), and at least one of arsenic (As), phosphorus (P), and antimony (Sb) on a GaAs substrate to form a plurality of second laser parts protruding from the surface of said GaAs substrate, said second laser parts each having a multilayer structure of said thin films and having a waveguide, and forming a second adhesive layer all over said protruding second laser parts and said GaAs substrate where said second laser part is not formed, thereby forming a second intermediate body; a third step of bonding said first adhesive layer and said second adhesive layer lying on said second laser parts so that said waveguides of said first laser part lie adjacent to said waveguides of said second laser parts, thereby fabricating a third intermediate body having a plurality of pairs comprising said first laser part and said second laser part bonded to each other through the interposition of an adhesive layer; a fourth step of irradiating a junction between said sapphire substrate and said first laser part with light to be transmitted through said sapphire substrate and absorbed by the group-III nitride compound semiconductors, so that said first laser part in the vicinity of the junction is decomposed, and portions of said first laser part corresponding to regions where said first and second adhesive layers are not in contact are broken; a fifth step of removing said sapphire substrate from said third intermediate body to expose said first laser part and said second adhesive layer lying on said GaAs substrate; and a sixth step of cleaving said third intermediate body after the removal of said sapphire substrate, and dividing the resultant where said second adhesive layer is exposed, thereby fabricating semiconductor laser devices each including a first laser part and a second laser part a seventh step of bonding an exposed surface of said first laser part and an exposed surface of said adhesive layer onto a support substrate, the seventh step following the sixth step.