H. Ye, L. Li, H. Lotfi, L. Lei, R. Q. Yang, J. C. Keay, T. D. Mishima, M.B. Santos, and M. B. Johnson, “Molecular beam epitaxy of interband cascade structures with InAs/GaSb superlattice absorbers for long-wavelength infrared detection,” Semicond. Sci. Technol. 30, 105029 (2015).