Patent ID: 9020003
Filing Date: 2015-04-28
Classification: H01L,H01S

Abstract:
1. An optical device comprising: a gallium and nitrogen containing member having a semipolar crystalline surface region characterized by a {30-3-1} surface orientation or an offcut of the {30-3-1} plane; a laser stripe region formed overlying a portion of the semipolar crystalline surface region, the laser stripe region being characterized by a cavity orientation substantially parallel to the projection of the c-direction, the laser stripe region having a first end and a second end; a first facet provided on the first end of the laser stripe region; a second facet provided on the second end of the laser stripe region; an n-type cladding region overlying the semipolar crystalline surface region; an active region comprising at least one active layer overlying the n-type cladding region; the at least one active layer comprising a quantum well region or a double hetero-structure region; and a p-type cladding region overlying the active region; wherein the active layer region is configured to emit electromagnetic radiation characterized by a wavelength ranging from about 430 nm to about 475 nm; wherein the surface orientation is inclined from (30-3-1) within −3 degrees to +2 degrees about the in-plane [11-20] direction toward an m-plane, wherein the m-plane is a (10-10) plane, the −3 degrees to +2 degrees corresponding to an inclination of approximately 8 degrees and 13 degrees, respectively, from the m-plane about the in-plane [11-20] direction; and wherein the surface orientation is inclined from (30-3-1) within −10 degrees to +10 degrees about the in-plane projection of the [0001] direction.