Laboratory of Photo-electronic Materials;
Ningbo University;
Ningbo 315211;
China Laboratory of Photo-electronic Materials;
Ningbo University;
Ningbo 315211;
China Laboratory of Photo-electronic Materials;
Ningbo University;
Ningbo 315211;
China Key Laboratory of Specially Functional Materials of Ministry of Education and Institute of Optical Communication Materials;
South China University of Technology;
Guangzhou 510641;
China;
Tm3+-doped; germanium-gallate; glasses; spectral; properties; cross; relaxation; emission; cross-section; rare; earths;