ABSTRACT
Calcium boro fluoro zinc phosphate glasses modified using alkali oxide and doped with Nd3+ and Er3+ ions with the chemical composition of 69.5 (B2 O3 ) + 10 (P2 O5 ) + 10 (CaF2 ) + 5 (ZnO) + 5 (Na2 O/Li2 O/K2 O) + 0.5 (Er2 O3 /Nd2 O3 ) were prepared using a conventional melt quenching technique. The results of X-ray diffraction patterns indicated the amorphous nature of all the prepared glasses. The visible-near-infrared red (NIR) absorption spectra of these glasses were analyzed systematically. The NIR emission spectra of Er3+ and Nd3+ :calcium boro fluoro zinc phosphate glasses showed prominent emission bands at 1536 nm (4 I13/2 â4 I15/2 ) and 1069 nm (4 F3/2 â4 I11/2 ) respectively with λexci = 514.5 nm (Ar+ laser) as the excitation source.
