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Proceedings Paper

Thermal comparison of buried-heterostructure and shallow-ridge lasers
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Paper Abstract

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.

Paper Details

Date Published: 23 February 2018
PDF: 6 pages
Proc. SPIE 10526, Physics and Simulation of Optoelectronic Devices XXVI, 105261E (23 February 2018);
Show Author Affiliations
V. Rustichelli, Technische Univ. Eindhoven (Netherlands)
F. Lemaître, Technische Univ. Eindhoven (Netherlands)
H. P. M. M. Ambrosius, Technische Univ. Eindhoven (Netherlands)
R. Brenot, III-V Lab. (France)
K. A. Williams, Technische Univ. Eindhoven (Netherlands)


Published in SPIE Proceedings Vol. 10526:
Physics and Simulation of Optoelectronic Devices XXVI
Bernd Witzigmann; Marek Osiński; Yasuhiko Arakawa, Editor(s)

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