Patent ID: 11870219
Assignee: QUANZHOU SANAN SEMICONDUCTOR TECHNOLOGY CO., LTD.
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 14:
15. A laser diode, comprising:
a substrate having a first surface and a second surface that are opposite to each other;
an epitaxial structure that is disposed on said first surface of said substrate and that is formed with a ridge structure on a side of said epitaxial structure opposite to said substrate;
an electrode contacting layer disposed on a top surface of said ridge structure, and formed with a plurality of through holes to expose said top surface of said ridge structure; and
an optical cladding layer having a refractive index smaller than that of said electrode contacting layer, and including a first cladding portion which covers side walls of said ridge structure and side walls of said electrode contacting layer, and a second cladding portion which is disposed on a portion of said top surface of said ridge structure and which includes an edge section connected to said first cladding portion and a middle section spaced apart from and surrounded by said edge section, said middle section being configured as a plurality of island structures that are spaced apart from each other and that are filled in said through holes.