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Journal of Physical Studies 16(3), Article 3705 [5 pages] (2012)
DOI: https://doi.org/10.30970/jps.16.3705 GREEN, RED AND INFRARED LUMINESCENCE IN GLASSES OF THE SYSTEM Ag0.05Ga0.05Ge0.95S2-Er2S3V. V. Halyan1, A. H. Kevshyn1, H. Ye. Davydyuk1, M. V. Shevchuk2
1Lesia Ukrainka Volyn National University, |
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Optical absorption spectra and photoluminescence of the glasses $(100-x)$Ag$_{0.05}$Ga$_{0.05}$Ge$_{0.95}$S$_{2}$-$(x)$Er$_{2}$S$_{3}$, where $x=0.42, 0.25, 0.18$ mol.\ 0.000000E+000r$_{2}$S$_{3}$, were investigated in the spectral range 450-1050 nm at room temperature. In the samples we observed a green, intense red and infrared emissions diode laser with the wavelength of 980 nm, corresponding to $^{2}$H$_{11/2}\rightarrow^{4}$I$_{15/2}$, $^{4}$F$_{9/2}\rightarrow^{4}$I$_{15/2}$, $^{4}$S$_{3/2}\rightarrow^{4}$I$_{13/2}$, transitions, respectively, in the Er$^{3+}$ ion and associated with the two-photon absorption processes. The excitation light in the range of fundamental transitions ($λ_{\rm ex}=405$ нм) causes only a green luminescence ($^{2}$H$_{11/2}\rightarrow^{4}$I$_{15/2}$) in the samples with 00.42, 0.25 mol.\ 0.000000E+000r$_{2}$S$_{3}$, which related with the processes of energy exchange between the glass matrix and ions Er$^{3+}$.
PACS number(s): 78.55.Qr, 73.61.Jc; 76.30.Kg