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首页> 外文会议>Conference on Optical Components and Materials >Optical properties and energy-transfer frequency upconversion of Yb3+-sensitized Ho3+- and Tb3+-doped lead-cadmium-germanate glass and glass ceramic
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Optical properties and energy-transfer frequency upconversion of Yb3+-sensitized Ho3+- and Tb3+-doped lead-cadmium-germanate glass and glass ceramic

机译：YB3 + -Sensitized HO3 + - 和TB3 + - 掺杂的铅镉 - 锗玻璃和玻璃陶瓷光学性能和能量转移频率上变化

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In this report we investigate the optical properties and energy-transfer upconversion luminescence of Ho3+- and Tb3+/Yb3+-codoped PbGeO3-PbF2-CdF2 glass-ceramic under infrared excitation. In Ho3+/Yb3+-codoped sample, green (545 nm), red(652 nm), and near-infrared(754 nm) upconversion luminescence corresponding to the 4S2(5F4) → 5I8, 5F5 → 5I8, and 4S2(5F4) → 5I7, respectively, was readly observed. Blue (490 nm) signals assigned to the 5F2,3 → 5I8 transition was also detected. In the Tb3+/Yb3+ system, bright UV-visible emission around 384, 415, 438, 473-490, 545, 587, and 623 nm, identified as due to the 5D3(5G6) → 7FJ(J=6,5,4) and 5D4→7FJ(J=6,5,4,3) transitions, was measured. The comparison of the upconversion process in glass ceramic and its glassy precursor revealed that the former samples present much higher upconversion efficiencies. The dependence of the upconversion emission upon pump power, and doping contents was also examined. The results indicate that successive energy-transfer between ytterbium and holmium ions and cooperative energy-transfer between ytterbium and terbium ions followed by excited-state absorption are the dominant upconversion excitation mechanisms herein involved. The viability of using the samples for three-dimensional solid-state color displays is also discussed.
机译：在本报告中，我们研究了红外激发下HO3 +和TB3 + / YB3 + -Codopo3-PBF2-CDF2玻璃玻璃陶瓷的光学性质和能量转移上转化发光。在HO3 + / YB3 + -codoped样品中，绿色（545nm），红色（652nm）和近红外（754n​​m）对应于4s2（5f4）→5i8,5f5→5i8和4s2（5f4）→的近红外（754n​​m）上转换发光。分别观察到5i7。还检测到分配给5F2,3→5i8转换的蓝色（490nm）信号。在Tb3 + / Yb3 +系统中，鉴定为5D3（5G6）→7FJ（J = 6,5,4的亮度为384,415,438,473-490,545,587和623nm的亮UV可见发射。 ）和5d4→7fj（j = 6,5,4,3）转换。玻璃陶瓷及其玻璃状前体上增源过程的比较显示，前一种样品具有更高的上增强效率。还检查了泵浦功率和掺杂内容物上的上变频发射的依赖性。结果表明，镱和钬离子之间的连续能量转移以及镱和铽离子之间的合作能量转移，然后是兴奋状态的吸收是本文所涉及的主要上变化激发机制。还讨论了使用用于三维固态彩色显示器的样品的可行性。

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