Spectroscopic characteristics and gain cross-section profiles of erbium-doped boro-tellurite glasses for optical amplifier applications - Kiran Kumar, B.; Reddi Babu, P.; Kavaz, Esra; Kshetri, Yuwaraj K.; Kim, Tae-Ho; Anjos, Virgilio de Carvalho dos; Deva Prasad Raju, B. (Optical Materials, 2024)