Current crowding in graded contact layers of intracavity-contacted oxide-confined vertical-cavity surface-emitting lasers

Abstract

In this work we present the simulation of the intracavity-contacted oxide-confined vertical-cavity surface-emitting lasers including the thermal effects. We analyze the thermal, electrical, and optical properties of such devices with the different thicknesses of graded layers between the contact and oxide confined layers. Results of simulations for the devices with graded layer thickness of 40-60 Å show a reduced current crowding effect. © 2005 American Institute of Physics.