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Photoluminescence (PL) with the bandwidth of 45nm (1523–1568nm at the level of 3dB) was observed in amorphous Er 2 O 3 films grown on to the quartz substrate by pulsed laser ablation of erbium oxide stoichiometric target. Optical transmission spectrum has been fitted to Swanepoel formula to determine the dispersion of refractive index and to extract resonance absorption peaks at 980...
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