Hybrid integration methodology for quantum cascade lasers with germanium waveguides in mid-IRColin J. Mitchell, Ahmed Osman, Ke Li, Jordi S. Penadés, Milos Nedeljkovic, Longqi Zhou, Kristian M. Groom, Jon Heffernan and Goran MashanovichEPJ Web Conf., 266 (2022) 01008DOI: https://doi.org/10.1051/epjconf/202226601008