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
A series of Yb：Nd：LiNbO3 crystals tridoped with various concentrations of Zr4＋（1 mol.%, 2 mol.% and 4 mol.%） were grown by the Czochralski technique from the congruent melt. The X-ray powder diffraction, UV-Vis-N...A series of Yb：Nd：LiNbO3 crystals tridoped with various concentrations of Zr4＋（1 mol.%, 2 mol.% and 4 mol.%） were grown by the Czochralski technique from the congruent melt. The X-ray powder diffraction, UV-Vis-NIR absorption spectra and IR transmittance spectra were measured to analyze the crystal composition and defect structure. The Zr4＋, Yb3＋ and Nd3＋ ions in LiNbO3 crystal had two effects： volume compensation effect and ion valence state compensation effect. The Zr O2 doping threshold concentration was nearly 2.0 mol.%. The fluorescence emissions of Nd3＋ ions and Yb3＋ ions were observed under 808 nm excitation. The intensity of fluorescence emissions enhanced with the increasing of the Zr4＋ doping concentrations. The Zr：Yb：Nd：LiNbO3 crystals with 4 mol.% doping concentration of Zr4＋ ion revealed strong emission around 1 μm, which is of great significance for laser materials.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 Youth Science Fund of Heilongjiang Province of China(QC2015061)
文摘A series of Yb：Nd：LiNbO3 crystals tridoped with various concentrations of Zr4＋（1 mol.%, 2 mol.% and 4 mol.%） were grown by the Czochralski technique from the congruent melt. The X-ray powder diffraction, UV-Vis-NIR absorption spectra and IR transmittance spectra were measured to analyze the crystal composition and defect structure. The Zr4＋, Yb3＋ and Nd3＋ ions in LiNbO3 crystal had two effects： volume compensation effect and ion valence state compensation effect. The Zr O2 doping threshold concentration was nearly 2.0 mol.%. The fluorescence emissions of Nd3＋ ions and Yb3＋ ions were observed under 808 nm excitation. The intensity of fluorescence emissions enhanced with the increasing of the Zr4＋ doping concentrations. The Zr：Yb：Nd：LiNbO3 crystals with 4 mol.% doping concentration of Zr4＋ ion revealed strong emission around 1 μm, which is of great significance for laser materials.
