Spectroscopic properties of Er-doped Na2O-Sb2O3-B2O3-SiO2 glasses |
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Authors: | Q. Qian G.F. Yang Z.M. Yang Z.H. Jiang |
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Affiliation: | Key Lab of Specially Functional Materials of Ministry of Education, Institute of Optical communication, South China University of Technology, Guangzhou 510641, PR China |
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Abstract: | Spectroscopic properties of Er3+-doped Na2O-Sb2O3-B2O3-SiO2 glasses have been investigated for developing 1.5-μm broadband fiber amplifiers. An intense 1.5-μm near infrared emission with a broad full width at half maximum (FWHM) of 88 nm has been obtained for Er3+-doped 5Na2O-20Sb2O3-35B2O3-40SiO2 glass upon excitation with a 980 nm laser diode. The obtained emission cross-section of the 4I13/2 → 4I15/2 transition and the lifetime of the 4I13/2 level of Er3+ ions are 6.8 × 10−21 cm2 and 0.36 ms, respectively. It is noted that the product of the emission cross-section and the FWHM of the glass, σe × FWHM, is as great as 598.4 × 10−21 cm2 nm, which is comparable or higher than that of Er3+-doped bismuth-based and tellurite-based glasses. These special optical properties encourage in identifying them as important materials for potential applications in high performance optics and optical communication networks. |
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Keywords: | 42.70.&minus a 78.20.&minus e 78.55.Qr |
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