High-power optical amplifier with enhanced wall-plug efficiency for 10-channel WDM satellite laser communication systemsSven Hochheim, Alexander Büttner, Eike Brockmüller, Willy Fittkau, Felix Wellmann, Peter Weßels, Jörg Neumann and Dietmar KrachtEPJ Web Conf., 267 (2022) 02001DOI: https://doi.org/10.1051/epjconf/202226702001