Abstract

Nd³⁺ strengthens the Er³⁺:2.7-μm emission 10⁴ times in fluorophosphate glass; in addition, it can also decrease its upconversion effects and the 1.5-μm emission accordingly. Cross-relaxation process is the principal transition mechanism in this codoping system. Compared with Er³⁺ singly doped glass, J-O parameters along with the A_rad, β, τ_R values of Er³⁺ change markedly in Er³⁺:Nd³⁺ codoped glass because Nd³⁺ greatly influences the local environment around Er³⁺. Results also show that Nd³⁺ has a good ⁴I_13/2 lifetime quenching effect as well as thermal load reduction ability for Er³⁺:2.7-μm emission.

© 2011 Chinese Optics Letters

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