Raman and Fluorescence Spectroscopy of CeO₂, Er₂O₃, Nd₂O₃, Tm₂O₃, Yb₂O₃, La₂O₃, and Tb₄O₇

Figure 5

Fluorescence emission spectra for Er₂O₃ with 442 nm excitation (a), 514 nm excitation (b), and 633 nm excitation (c) in the ranges of (1) 640 nm–700 nm and (2) 530 nm–580 nm. The emission lines exhibit good agreement in emission positions for different excitation wavelengths.

(a)

(b)