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Highlights: [•] Er3+/Ce3+ co-doped tellurite glasses containing WO3 was prepared by a melt-quenching method. [•] 1.53μm Fluorescence properties and thermal stability were investigated. [•] Thermal stability of glass hosts increased with WO3 component. [•] 1.53μm Fluorescence intensity of Er3+ improved evidently with an enhanced phonon-assisted energy transfer. [•] The prepared glasses possess a large amplification quality factor of Er3+ at 1.53μm band. [Copyright &y& Elsevier]

Abstract: Using femto-second Z-scan measurements, third-order nonlinearities of glasses in TeO2–Bi2O3–TiO2 ternary system were investigated at 800nm. Their relationships between linear optics represented by linear refractive indexes n 0 and optical band gap E opg were studied. Results show that non-linear index γ increases with increasing n 0, the largest value of γ is 5.108×10−18 m2/W. Non-linear absorption which recognized as two-photon absorption was resonantly enhanced when E opg approached 3.1eV, namely two-photon process. [Copyright &y& Elsevier]