Abstract
Praseodymium (Pr 3+)-doped tellurite glasses suitable for planar waveguide device applications at 1.3 μm operation have been fabricated and characterized optically. The maximum phonon band of undoped glasses is at 738 cm −1, and the emission from the Pr 3+: 1 G 4→ 3 H 5 transition is at 1.33 μm wavelength with a spectral bandwidth of 100 nm. The lifetime of the 1 G 4 level is ∼24 μs, and the quantum efficiency is ∼2.6%, which is similar to that in fluorozirconate glasses.
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