RESONANT FLUORESCENCE LINE NARROWING IN La_1-xNd_xP₅O₁₄ GLASS

The absorption spectra and fluorescence spectra of La_1-xNd_xP₅O₁₄(LNPP) glass were studied. The fluorescence from the level of interest ⁴F_3/2(1) state shows an exponential decay and linear concentration quenching. Time resolved fluorescence line narrowing was observed for LNPP glass with different x values. For high x value LNPP glass, energy transfer between Nd³⁺ ions intraline was observed at low temperature.