Figure 7
From: Magneto-optical borogermanate glasses and fibers containing Tb3+
(a) PLE spectrum of the BGB-4Tb glass and (b) PL spectra of the BGB-xTb glasses at room temperature. Inset photograph: BGB-4Tb sample under excitation at 375 nm. Inset: PL spectra of the BGB-xTb glasses (x = 14, 16, and 18 mol% Tb4O7) in the region from 530 to 560 nm.
