J. A. Gupta, G. C. Aers, E. Dupont, J. Baribeau, X. Wu, Y. Jiang, L. Li, R. Q. Yang, and M. B. Johnson “MBE Growth of Type-I interband cascade lasers near 3.2 μm”, paper Th-C16, at 19th International Conference on Molecular Beam Epitaxy (MBE 2016) , Montpellier, France, Sept. 4 – 9, 2016.