Patent ID: 6526081
Filing Date: 2003-02-25
Classification: H01S

Abstract:
A surface emitting semiconductor laser comprising an active region including an active layer, and a lower mirror and an upper mirror sandwiching said active region,wherein at least one of said lower mirror and said upper mirror is formed of a semiconductor multilayer film obtained by alternately and repeatedly stacking a first layer and a second layer, merely said first layer closest to said active region includes a closed area made of a semiconductor and an oxide area surrounding said closed area, wherein an aluminum composition of said closed area is the same as an aluminum composition of said first layer in said semiconductor multilayer film, wherein further comprises a further layer formed on a top surface of said first layer closest to said active region, and wherein said further layer has a thickness of approximately 1 nm through approximately 10 nm, and is made of a semiconductor of which said second layer is made.