Thermal comparison of buried-heterostructure and shallow-ridge lasers

V. Rustichelli, F. Lemaître, H.P.M.M. Ambrosius, R. Brenot, K.A. Williams

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)
2 Downloads (Pure)


We present finite difference thermal modeling to predict temperature distribution, heat flux, and thermal resistance inside lasers with different waveguide geometries. We provide a quantitative experimental and theoretical comparison of the thermal behavior of shallow-ridge (SR) and buried-heterostructure (BH) lasers. We investigate the influence of a split heat source to describe p-layer Joule heating and nonradiative energy loss in the active layer and the heat-sinking from top as well as bottom when quantifying thermal impedance. From both measured values and numerical modeling we can quantify the thermal resistance for BH lasers and SR lasers, showing an improved thermal performance from 50K/W to 30K/W for otherwise equivalent BH laser designs.

Original languageEnglish
Title of host publicationPhysics and Simulation of Optoelectronic Devices XXVI
Place of PublicationBellingham
Number of pages7
ISBN (Electronic)9781510615373
Publication statusPublished - 1 Jan 2018
EventPhysics and Simulation of Optoelectronic Devices XXVI - San Francisco, United States
Duration: 29 Jan 20181 Feb 2018

Publication series

NameProceedings of SPIE


ConferencePhysics and Simulation of Optoelectronic Devices XXVI
Country/TerritoryUnited States
CitySan Francisco


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