Harold

Introduction

Features

Applications

Introduction

What is Harold?

Harold is an advanced hetero-structure model, whose results can be exported into CLADISS-2D and PICWave.

In 1D mode, HAROLD solves the appropriate differential equations in the vertical direction, for a quantum well laser with arbitrary vertical multiple structure and composition. Both single and quantum well lasers can be modelled. A state of the art capture/escape model for carriers in a quantum wells is implemented. Both pulsed (isothermal) and CW (self-heating) operating conditions can be simulated. Materials include ternary and quaternary alloys.

In 2D mode, Harold will model longitudinal effects for simple Fabry-Perot cavities.