Abstract
The Nd 3+, Cr 3+ -single doped—and their codoped—lead silicate glasses (SiO 2–Na 2CO 3–ZnO–PbO) have been synthesized by means of fusion method. Their properties are studied by means of optical absorption and photoluminescence. In Cr 3+/Nd 3+-codoped glasses, a strong enhancement of emission band A (B) of Nd 3+ ions centered at 810 nm ( 890 nm ) at low (high) temperature has been observed. It is attributed to non-radiative energy transfer process between donor (Cr 3+) and acceptor (Nd 3+) mediated by localized phonons. In the regime of low temperature, the radiative energy transfer process between Nd 3+ and Cr 3+ ions plays an important role in determining the optical properties of rare-earth doped glasses.
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