Color Centers in Sulfur-Doped Silica Glass: Spectroscopic Manifestations of an Interstitial Molecule S2 |
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| Authors: | Yu S Zavorotny E V Lutsko A O Rybaltovskii P V Chernov V O Sokolov R R Khrapko |
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| Affiliation: | (1) Skobeltsyn Research Institute of Nuclear Physics, Moscow State University, Vorob'evy gory, Moscow, 119899, Russia;(2) Research Center of Fiber Optics, General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 117942, Russia |
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| Abstract: | The absorption and luminescence spectra of color centers in sulfur-doped silica glass are investigated. It is demonstrated that the most intense bands of absorption at 280 nm and luminescence at 385 nm have a resolved vibrational structure. These bands are assigned to interstitial molecules S2, which are weakly bound to the glass network. The proposed model provides a simple interpretation of the shift observed for the luminescence excitation band with respect to the corresponding absorption band. |
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