Patent ID: 6185238
Filing Date: 2001-02-06
Classification: B82Y,H01L,H01S

Abstract:
A nitride compound semiconductor laser comprising:a multi-layered structure made of gallium nitride compound semiconductors Ga.sub.x In.sub.y Al.sub.z N where x+y+z=1, 0.ltoreq.x.ltoreq.1, 0.ltoreq.y.ltoreq.1 and 0.ltoreq.z.ltoreq.1, including, at least, a first cladding layer of a first conduction type, an active layer overlying said first cladding layer and a second cladding layer of a second conduction type overlying said active layer; andcurrent blocking layers made by forming at least two grooves extending on the major surface of said multi-layered structure closer to said second cladding layer and by filling said grooves with an insulator,said current blocking layers extending in a direction perpendicular to a light emitting facet and said current blocking layers being not exposed to side surfaces of said multi-layered structure perpendicular to said light emitting facet, wherein said multi-layered structure further comprises a contact layer of a first conduction type and an electrode in contact with said contact layer, the relation of W1.ltoreq.4.multidot.W2 being established where W1 is the distance between every adjacent two current blocking layers and W2 is the thickness of said contact layer.