1875-nm high-energy mode-locked thulium fiber laser Panuwat Srisamran, Duanyang Xu, Ibrahim Abughazaleh, Matthew Gerard, Sijing Liang, David Richardson and Lin Xu EPJ Web Conf., 267 (2022) 02013 Published online: 18 October 2022 DOI: 10.1051/epjconf/202226702013