Patent ID: 7378680
Filing Date: 2008-05-27
Classification: B82Y,H01L,H01S

Abstract:
1. A method for processing nitrogen-containing active regions associated with a semiconductor laser, said method comprising the steps of: providing a substrate; developing a first confining region including mirror layers above said substrate; developing an active region including nitrogen containing layers interspersed nitrogen-free layers above said first confining region, wherein said nitrogen containing layers and said nitrogen-free layers are associated with at least one quantum well or at least one barrier layer, said developing an active region further comprising growing at least one nitrogen-free layer by alternately depositing single atomic layers of group III constituents and group V constituents without nitrogen being present, and growing at least one nitrogen containing layer on said at least one nitrogen-free layer; and developing a second confining region including mirror layers above said active region; wherein said step of alternately depositing single atomic layers of group III and group V constituents renders a nitrogen-free layer that is substantially flat and the at least one nitrogen-containing layer is grown on the substantially flat nitrogen-free layer, the nitrogen-containing layer comprising an amount of In and/or Sb that creates a compressive strain between the nitrogen-containing layer and the substantially flat nitrogen-free layer, without relaxation, thereby decreasing the band gap energy.