Kainz, M. A., Schönhuber, S., Limbacher, B., Andrews, A. M., Detz, H., Strasser, G., Bastard, G., & Unterrainer, K. (2019). Color switching of a terahertz quantum cascade laser. Applied Physics Letters, 114(19), 191104. https://doi.org/10.1063/1.5093901