Work

Thermal Performance of 940 nm AlGaAs-Based VCSELs Grown on Germanium

Year: 2025

Type: article

Abstract: VCSEL thermal resistances are determined from power-current-voltage-wavelength measurements performed on nominally identical epitaxial structures grown on Ge and GaAs substrates. We show that the effective thermal conductivity of the VCSEL is increased when grown on Ge substrates.

Source: IEEE photonics journal

DOI: 10.1109/jphot.2025.3552951

Authors: Jack Baker, Craig P. Allford, Sara Gillgrass, J. Iwan Davies, Samuel Shutts, Peter M. Smowton

Institutions: Cardiff University, IQE (United Kingdom)

Language: English

Topic: Semiconductor Lasers and Optical Devices

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,075

Funders: UK Research and Innovation, Engineering and Physical Sciences Research Council