Department of Physics2024-11-1020219781-5575-2820-9N/A2-s2.0-85130257941https://hdl.handle.net/20.500.14288/17256We report the first experimental demonstration of continuous-wave laser action near 1.9 μm in a femtosecond laser written Tm3+ ion-doped BaY2F8 crystal waveguide laser with incident lasing threshold pump power as low as 23 mW.OpticsFemtosecond laser written Tm3+:BaY2F8 waveguide laser operating near 1.9 μmConference proceedinghttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85130257941&partnerID=40&md5=26c2b1b47a1d4c6bfc7ce1fdbd73a92210483