Abstract
Er3+ and Er3+ : Yb3+ doped optical quality, crack and bubble free glasses for possible use in making laser material have been prepared successfully through sol-gel route. The thermal and optical, including UV-visible absorption, FTIR etc characterizations were undertaken on the samples. The absorption characteristics of Er3+ doped samples clearly revealed the absorption due to Er3+ ions. On the other hand Yb3+ : Er3+ doped samples showed enhanced absorption due to2 F 7/2 →2 F 5/2 transition. The absorption and emission cross-section for2 F 7/2 ↔2 F 5/2 of Yb3+ were estimated. FTIR absorption spectra have clearly shown the reduction of the absorption peak intensity with heat treatment in the range 3700–2900 cm−1. The 960 cm-1 band also showed progressive decrease in the absorption band peak intensity with heat treatment. The result of the investigations with essential discussions and conclusions have been reported in this paper.
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Mandal, D., Banerjee, H.D., Goswami, M.L.N. et al. Synthesis of Er3+ and Er3+ : Yb3+ doped sol-gel derived silica glass and studies on their optical properties. Bull Mater Sci 27, 367–372 (2004). https://doi.org/10.1007/BF02704774
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DOI: https://doi.org/10.1007/BF02704774