Oskar Painter, Raviv Perahia et al. show air-guided quantum cascade lasers

V. Moreau, M. Bahriz, R. Colombelli, R. Perahia, O. Painter, L. R. Wilson, and A. B. Krysa (2007) Demonstration of air-guided quantum cascade lasers without top claddings. Optics Express, 15(22):14861-14869, 29 October 2007. CaltechAUTHORS