采用Czochralski技术分别生长了双掺Zr4+(1mol%,2mol%,3mol%)和Yb3+(0mol%,1mol%,1mol%)的Zr∶Yb∶Li Nb O3晶体。测试了晶体的XRD图谱并与标准图谱进行了比较。测量了晶体的红外透射光谱,OH-的振动吸收峰分别位于3485 cm-1、3488 cm-1...采用Czochralski技术分别生长了双掺Zr4+(1mol%,2mol%,3mol%)和Yb3+(0mol%,1mol%,1mol%)的Zr∶Yb∶Li Nb O3晶体。测试了晶体的XRD图谱并与标准图谱进行了比较。测量了晶体的红外透射光谱,OH-的振动吸收峰分别位于3485 cm-1、3488 cm-1和3488 cm-1,当Zr4+浓度达到2mol%以后,继续增大Zr4+浓度,OH-的振动吸收峰不发生移动。研究了晶体的室温吸收、发射光谱和荧光寿命特性,表明Zr∶Yb∶Li Nb O3晶体是一种潜在的可用来发展具有抗光损伤的新型激光晶体材料。展开更多
The effects of bismuth doping content and temperature on the absorption property and near-infrared （NIR） luminescence of Bi-doped La2O3-Al2O3-SiO2 （LAS） glasses are presented. The emission intensity reaches the ma...The effects of bismuth doping content and temperature on the absorption property and near-infrared （NIR） luminescence of Bi-doped La2O3-Al2O3-SiO2 （LAS） glasses are presented. The emission intensity reaches the maximum when the Bi2O3 content in 3.0Bi-LAS is 1.83%. The emission spectra reach their peaks at 1 190 and 1 117 nm, with full-width at half-maximum （FWHM） values of 330 and 228 nm under 500 and 700-nm excitations, respectively. As the Bi203 content increases, the peak wavelengths and FWHMs of emission bands increase, but their lifetimes decrease. The lifetime of 2.0Bi-LAS is 460 μs at 9 K, and is almost temperature independent until 350 K. The NIR emission of Bi in the system has strong resistance to thermal quenching from 9 to 350 K.展开更多
文摘采用Czochralski技术分别生长了双掺Zr4+(1mol%,2mol%,3mol%)和Yb3+(0mol%,1mol%,1mol%)的Zr∶Yb∶Li Nb O3晶体。测试了晶体的XRD图谱并与标准图谱进行了比较。测量了晶体的红外透射光谱,OH-的振动吸收峰分别位于3485 cm-1、3488 cm-1和3488 cm-1,当Zr4+浓度达到2mol%以后,继续增大Zr4+浓度,OH-的振动吸收峰不发生移动。研究了晶体的室温吸收、发射光谱和荧光寿命特性,表明Zr∶Yb∶Li Nb O3晶体是一种潜在的可用来发展具有抗光损伤的新型激光晶体材料。
基金supported by the National Natural Science Foundation of China(Nos.60937003 and 61111120100)
文摘The effects of bismuth doping content and temperature on the absorption property and near-infrared （NIR） luminescence of Bi-doped La2O3-Al2O3-SiO2 （LAS） glasses are presented. The emission intensity reaches the maximum when the Bi2O3 content in 3.0Bi-LAS is 1.83%. The emission spectra reach their peaks at 1 190 and 1 117 nm, with full-width at half-maximum （FWHM） values of 330 and 228 nm under 500 and 700-nm excitations, respectively. As the Bi203 content increases, the peak wavelengths and FWHMs of emission bands increase, but their lifetimes decrease. The lifetime of 2.0Bi-LAS is 460 μs at 9 K, and is almost temperature independent until 350 K. The NIR emission of Bi in the system has strong resistance to thermal quenching from 9 to 350 K.
