Patent ID: 7356063
Filing Date: 2008-04-08
Classification: H01S

Abstract:
1. A surface emitting semiconductor device comprising: a first conductivity type semiconductor region having a side surface, said first conductivity type semiconductor region being provided on a GaAs semiconductor region; an active layer having a side surface, said active layer being provided on said first conductivity type semiconductor region; a second conductivity type semiconductor layer, provided on said active layer, and having a side surface; a current block semiconductor region provided on said side surface of the first conductivity type semiconductor region, said side surface of said active layer, and said side surface of said second conductivity type semiconductor layer; a first DBR portion having a plurality of first DBR semiconductor layers and a plurality of second DBR semiconductor layers, said first DBR semiconductor layers and said second DBR semiconductor layers being arranged alternately; a second DBR portion having a plurality of third DBR semiconductor layers and a plurality of fourth DBR semiconductor layers, said third DBR semiconductor layers and said fourth DBR semiconductor layers being arranged alternately; and an additional semiconductor layer made of III-V compound semiconductor; wherein said first conductivity type semiconductor region, said active layer and said second conductivity type semiconductor layer are provided between said first DBR portion and said second DBR portion; wherein said current block semiconductor region is provided for confining carriers to said first conductivity type semiconductor region, said active layer, and said second conductivity type semiconductor layer; wherein said active layer is made of III-V compound semiconductor including at least a nitrogen element as a V group member; wherein said additional semiconductor layer is provided between said active layer and said first conductivity type semiconductor region; and wherein a photoluminescence wavelength of said III-V compound semiconductor of said additional semiconductor layer is between that of said active layer and that of said first conductivity type semiconductor region.