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Absorption, emission, excitation spectra and the excited state decay kinetics of 4S3/2 luminescent state of Er(3+) ions in a (lead, lanthanum) tellurite glass have been studied. In spite of the fact that the host glass itself has a strong absorption edge in the 375 - 390 nm wavelength region, the incorporated Er(3+) ions exhibit a strong green luminescence upon illuminating the former with light of 375 - 390 nm. Analysis of the luminescence spectrum shows that the green bands in the wavelength range 534 - 553 nm and the very weak red component in the range 650 - 710 nm are, respectively, due to (2H11/2 --> 4I15/2 and 4S3/2 --> 4I15/2) and 4F9/2 --> 4I15/2 transition of Er(3+). A study of the excited state dynamics of the green luminescence reveals that the process of depopulation of the excited 4S3/2 state of Er(3+) in the glass, involves at least three channels. It is argued that on illuminating the glass at its UV absorption edge, the excitation of Er(3+) occurs at some higher energy level via energy transfer from the host, and reaches 4S3/2 state very efficiently.