Glasses based on Sm3+ doped zinc fluoroborate were synthesized and characterized. Formations of glasses were investigated in the 30 ZnF2-20 TeO2-(50-x)B2O3-x Sm2O3 matrix. Fast quenching and adequate heat treatment ar...Glasses based on Sm3+ doped zinc fluoroborate were synthesized and characterized. Formations of glasses were investigated in the 30 ZnF2-20 TeO2-(50-x)B2O3-x Sm2O3 matrix. Fast quenching and adequate heat treatment are required to prevent melt crystallization and to diminish thermal stress, which result in an efficient amorphous material. The differential scanning calorimetry(DSC), scanning electron microscopy(SEM), energy dispersive X-ray analysis(EDAX), X-ray photoelectron spectroscopy(XPS) were employed to record, calculate, measure and analyze the stability, density and refractive index of the glass samples with different concentrations of Sm3+ ranging between 0 to 2.5%(mass fraction). XPS result shows the values of core-level binding energy(Zn 3s, Sm 4d, Te 3d, B 1s, O 1s and F 1s) of(ZnF2-TeO2-B2O3-Sm2O3) glass matrix and indicates the good fusibility of the present glass samples. Density of the glass samples increases as dopant concentration increases and glass transition temperature tg ranges between 395 °C and 420 °C.展开更多
We investigated nonlinear optical properties of ZnO-Nb2O5-TeO2 glass excited by a femtosecond laser with time-resolved four-wave mixing (FWM) technique. The unusual FWM signals were observed in samples with ZnO dopant...We investigated nonlinear optical properties of ZnO-Nb2O5-TeO2 glass excited by a femtosecond laser with time-resolved four-wave mixing (FWM) technique. The unusual FWM signals were observed in samples with ZnO dopant. The mechanism for the optical nonlinearities was discussed.展开更多
基金Project supported by a grant-in-aid for a scientific research from the Department of Atomic Energy(DAE)-Board of Research in Nuclear Science(BRNS)of the Government of India
文摘Glasses based on Sm3+ doped zinc fluoroborate were synthesized and characterized. Formations of glasses were investigated in the 30 ZnF2-20 TeO2-(50-x)B2O3-x Sm2O3 matrix. Fast quenching and adequate heat treatment are required to prevent melt crystallization and to diminish thermal stress, which result in an efficient amorphous material. The differential scanning calorimetry(DSC), scanning electron microscopy(SEM), energy dispersive X-ray analysis(EDAX), X-ray photoelectron spectroscopy(XPS) were employed to record, calculate, measure and analyze the stability, density and refractive index of the glass samples with different concentrations of Sm3+ ranging between 0 to 2.5%(mass fraction). XPS result shows the values of core-level binding energy(Zn 3s, Sm 4d, Te 3d, B 1s, O 1s and F 1s) of(ZnF2-TeO2-B2O3-Sm2O3) glass matrix and indicates the good fusibility of the present glass samples. Density of the glass samples increases as dopant concentration increases and glass transition temperature tg ranges between 395 °C and 420 °C.
基金This work was supported by Shanghai Priority Academic DisciPline,National Natural Science Foundation (No.10234030),National Key project for Basic Research (No.1999075200),the Key Project sponsored by National Education Ministry of China and the PhosP
文摘We investigated nonlinear optical properties of ZnO-Nb2O5-TeO2 glass excited by a femtosecond laser with time-resolved four-wave mixing (FWM) technique. The unusual FWM signals were observed in samples with ZnO dopant. The mechanism for the optical nonlinearities was discussed.
