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.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)