Deutsch, C., Mujagic, E., Benz, A., Andrews, A. M., Klang, P., Detz, H., Schrenk, W., Strasser, G., & Unterrainer, K. (2010). Surface-emitting Terahertz Quantum Cascade Ring Lasers. In J.-F. Lampin, D. J. Decoster, & Razeghi Manijeh (Eds.), Terahertz Emitters, Receivers, and Applications (pp. 776305-1-776305–776307). SPIE. https://doi.org/10.1117/12.860583