Thermal conductivity tensors of the cladding and active layers of interband cascade lasers

Chuanle Zhou, Boya Cui, I. Vurgaftman, C. L. Canedy, C. S. Kim, M. Kim, W. W. Bewley, C. D. Merritt, J. Abell, J. R. Meyer, M. Grayson

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The cross-plane and in-plane thermal conductivities of the W-active stages and InAs/AlSb superlattice optical cladding layer of an interband cascade laser (ICL) were characterized for temperatures ranging from 15K to 324K. The in-plane thermal conductivity of the active layer is somewhat larger than the cross-plane value at temperatures above about 30K, while the thermal conductivity tensor becomes nearly isotropic at the lowest temperatures studied. These results will improve ICL performance simulations and guide the optimization of thermal management.

Original languageEnglish (US)
Article number261905
JournalApplied Physics Letters
Volume105
Issue number26
DOIs
StatePublished - Dec 29 2014

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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