Enhanced Optical Properties of Germanate and Tellurite Glasses Containing Metal or Semiconductor Nanoparticles
Figure 6
(a) Frequency upconversion spectra of the of Er3+/Yb3+ codoped PbO-GeO2 glasses containing silver NPs for different heat-treatment times. (b) Normalized integrated upconversion intensity (UCI: peak centered at 525 nm, UCII: peak centered at 550 nm, and UCIII: peak centered at 662 nm) as a function of the annealing time [2].
