Figure 3 | Scientific Reports

Figure 3

From: Plasmon-photon conversion to near-infrared emission from Yb3+: (Au/Ag-nanoparticles) in tungsten-tellurite glasses

Figure 3

(a) Visible-NIR absorption spectra of the samples without Yb3+ ions. The samples with GNPs clearly show a resonance band. (b) Visible-NIR absorption spectra of the samples doped with Yb3+ ions and GNPs or SNPs. The samples with GNPs clearly show a resonance band. Inset: deconvolution of the Yb3+ ion absorption band (2F7/2 level) showing its four Stark splitting.

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