J. A. Massengale, Y. Shen, R. Q. Yang, S. D. Hawkins, and J. F. Klem, “Long Wavelength Interband Cascade Lasers”, talk O1-4, The 15th International Conference on Mid-infrared Optoelectronic Materials and Devices (MIOMD), Surrey (Virtual), UK, Sept. 1-3, 2021.