Figure 4

Optical absorption spectrum of (a) PMZ0.5Sm, (b) PMZ0.5Dy, (c) PMZ0.5Er, (d) PMZS0.5Ag, (e) PMZD0.5Ag, (f) PMZE0.5Ag, (g) PMZSA0.4Ti, (h) PZD10Ca, (i) PMZE0.5Ti, (j) PMZSE0.4Ti, (k) PMS30Zn, (l) PMZET0.05Ag glass samples in 300–2000 nm wavelength.