Quantum cascade laser frequency comb locked with 200 mrad residual phase noiseKenichi N. Komagata, Alexandre Parriaux, Mathieu Bertrand, Johannes Hillbr, Valentin J. Wittwer, Jérôme Faist and Thomas SüdmeyerEPJ Web Conf., 287 (2023) 07016DOI: https://doi.org/10.1051/epjconf/202328707016