AlF3-REF3-AEF2 (RE: rare earth, AE: alkali earth) system fluoride glasses were prepared by quenching melts. The glass forming region of AlF3NdF3-(Mg0.25Ca0.25Sr0.25Ba0.25) F2 system was determined. Effects of AE and R...AlF3-REF3-AEF2 (RE: rare earth, AE: alkali earth) system fluoride glasses were prepared by quenching melts. The glass forming region of AlF3NdF3-(Mg0.25Ca0.25Sr0.25Ba0.25) F2 system was determined. Effects of AE and RE fluoride on the glass forming ability and thermal properties of the system have been discussed. The IR cut-off wavelength of AIF3-REF3-AEF3 glass is about 7 μm. This system has many advantages, such as low refractive index, high Abbe number, high Tg and Tc-Tg values, and good chemical durability, etc. This is a kind of new excellent ultra-low loss optical fiber and IR optical material.展开更多
We report on the experimental study of the visible and ultraviolet (UV) fluorescence emission in a (1% molar) Thulium (Tm+3)-doped Zirconium fluoride glass sample. From red at 650 nm, blue (453 & 480 nm) and UV at...We report on the experimental study of the visible and ultraviolet (UV) fluorescence emission in a (1% molar) Thulium (Tm+3)-doped Zirconium fluoride glass sample. From red at 650 nm, blue (453 & 480 nm) and UV at 365 & 284 nm, have been observed under excitation of a Nd:YAG laser at 1.064 μm. The responsible up-conversion mechanisms are investigated based on experimental data. The related problem of photo-degradation associated with formation of color centers is also addressed.展开更多
文摘AlF3-REF3-AEF2 (RE: rare earth, AE: alkali earth) system fluoride glasses were prepared by quenching melts. The glass forming region of AlF3NdF3-(Mg0.25Ca0.25Sr0.25Ba0.25) F2 system was determined. Effects of AE and RE fluoride on the glass forming ability and thermal properties of the system have been discussed. The IR cut-off wavelength of AIF3-REF3-AEF3 glass is about 7 μm. This system has many advantages, such as low refractive index, high Abbe number, high Tg and Tc-Tg values, and good chemical durability, etc. This is a kind of new excellent ultra-low loss optical fiber and IR optical material.
文摘We report on the experimental study of the visible and ultraviolet (UV) fluorescence emission in a (1% molar) Thulium (Tm+3)-doped Zirconium fluoride glass sample. From red at 650 nm, blue (453 & 480 nm) and UV at 365 & 284 nm, have been observed under excitation of a Nd:YAG laser at 1.064 μm. The responsible up-conversion mechanisms are investigated based on experimental data. The related problem of photo-degradation associated with formation of color centers is also addressed.
