Abstract
Concentration dependence of emission properties and lifetimes of Tm3+ doped tellurite glasses in telecommunication wavelength region were investigated. According to Judd-Ofelt analysis, it was clarified that the quantum efficiency of 1.46μm in Tm3+-doped tellurite glasses was almost equal to that in fluoride glasses, which were used as host materials for Tm3+-doped fiber amplifiers (TDFA). The emission intensity ratio of the 1.80μm band to the 1.46μm band increased with increasing Tm3+ content. Moreover, the lifetimes of the 3H4 level decreased rapidly with increasing Tm3+ content. These results show that tellurite glass is useful as host materials of TDFA and in order to achieve a high quantum efficiency of 1.46μm emission in tellurite glasses, the concentration of Tm3+ should be low so that cross relaxation can be suppressed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
