Abstract
The spectra and photoluminescence kinetics of Er3+ ions embedded in amorphous fluorine- and chlorine-doped silica matrices synthesized by surface-plasma chemical vapor deposition were investigated at 27–300 K. Luminescence was excited with an Ar+ laser at a wavelength of 514.5 nm and with a diode laser at a wavelength of 975 nm. Narrow and well-expressed components of Stark sublevels with a small contribution of inhomogeneous broadening intrinsic to Er3+ ions in crystalline rather than amorphous matrices were revealed and identified in photoluminescence spectra. The structure of Stark sublevels was well-resolved at low temperatures. The presence of the well-resolved Stark structure in spectra was indicative of stable anion complex formation in Er3+ environment presumably associated with halogen incorporation. This environment was formed at a stage of the low-temperature plasma-chemical synthesis and was destroyed at glass fusion.
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Kholodkov, A.V., Golant, K.M. & Iskhakova, L.D. Peculiarities of Er3+ photoluminescence in halogen-doped amorphous silica. Phys. Wave Phen. 17, 155–164 (2009). https://doi.org/10.3103/S1541308X09030017
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DOI: https://doi.org/10.3103/S1541308X09030017