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17 June 2003Spectroscopic properties of Er3+-doped glasses for amplifiers
Spectroscopic properties of Er3+ doped various glasses are investigated experimentally on the basis of Judd-Ofelt theory, McCumber theory, and lifetime measurements. A strong correlation is observed between glass composition and spectroscopic parameters such as Judd-Ofelt intensity parameters Ωt (t=2, 4, 6), emission spectra, and lifetime of 4I13/2 level of Er3+. The emission parameters of Er3+ doped various glasses are discussed from the viewpoints of emission and gain characteristics at the 1.55μm bands. The results show that tellurite glass is an indeed promising material for Er3+ doped to realize broadband and high gain amplification