Patent ID: 8900902
Filing Date: 2014-12-02
Classification: H01S

Abstract:
1. A process for producing a surface-emitting laser including a surface relief structure provided on a laminated semiconductor layer and a mesa structure, comprising: forming a first dielectric film on the laminated semiconductor; forming a first resist film having a first pattern for defining the mesa structure and a second pattern for defining the surface relief structure which are formed by lithography, on the first dielectric film; forming a second dielectric film on the first resist film and the first dielectric film formed under the second pattern using the first resist film as a mask, after forming the first resist film; forming a second resist film on the second dielectric film formed in the second pattern for covering the second pattern and exposing the first pattern; removing the first dielectric film formed under the first pattern using the first resist film and the second resist film as a mask; forming the mesa structure by removing the laminated semiconductor layer under the first pattern using the first resist film and the second resist film as a mask, after removing the first dielectric film; and forming a current confinement structure by oxidation from side surfaces of the mesa structure, wherein the first pattern and the second pattern are formed in the same step.