Patent ID: 9705284
Date: 2017-07-11
CPC Classifications: H01S

Claim:
1. A vertical cavity surface emitting laser (VCSEL) comprising: a substrate having first and second major surfaces; a first distributed Bragg reflector (DBR) having first and second opposing major surfaces, the first major surface of the first DBR disposed on the first major surface of the substrate; an active region on a first portion of the second major surface of the first DBR; a second DBR disposed above the active region; a first hole in the substrate that extends between the first and second major surfaces of the substrate and exposes part of the first major surface of the first DBR; a first electrically conductive material extending through the first hole, forming a first ohmic contact layer on the first major surface of the first DBR; a second hole that extends through the substrate and a second portion of the second major surface the first DBR, the second portion spaced apart from the first portion; a contact metal region on the second portion of the second major surface of the first DBR so as to be disposed over the second hole; a second electrically conductive material extending through the second hole to the contact metal region; a second ohmic contact layer disposed on an upper major surface of the second DBR: and an electrical connection disposed between the contact metal region and the second ohmic contact layer.