Patent ID: 9184562
Filing Date: 2015-11-10
Classification: H01S

Abstract:
1. A method for hybridizing a vertical-cavity laser (VCL) structure on a silicon platform using a bottom grating-minor in the silicon platform, the method comprising: providing a layered structure comprising an active region formed in III-V materials and a highly reflective top mirror that is not used as an out-coupling mirror and that has a reflectivity larger than 99.5%; forming a grating region in a silicon layer supported by a supporting layer with lower refractive index, the grating region comprising a one-dimensional (1D) or two-dimensional (2D) periodic refractive index grating formed by silicon layer parts and regions being formed in the silicon layer and having refractive indices lower than the refractive index of the silicon layer; forming a waveguide in the silicon layer of the grating region with an end face formed within or abutting the grating region to facilitate lateral out-coupling of light from the grating region to the waveguide; and arranging the layered structure on the grating region, comprising providing a layer with refractive index lower than the refractive index of the silicon layer between the layered structure and the grating region, whereby the periodic refractive index grating establishes a bottom grating-minor to form a VCL cavity between the top minor and the grating region, and wherein the bottom grating-minor has a reflectivity greater than 99%, wherein the supporting layer has a refractive index n