Recent progress on rare earth amplifiers and lasers directly on silicon Jonathan D. B. Bradley, Khadijeh Miarabbas Kiani, Henry C. Frankis, Cameron M. Naraine, Dawson B. Bonneville, Hamidu M. Mbonde and Andrew P. Knights EPJ Web Conf., 267 (2022) 02041 Published online: 18 October 2022 DOI: 10.1051/epjconf/202226702041