Multifrequency Spectroscopy of Rare-Earth and Transition Ions in Optical Materials

* 非技术性摘要 * 当今电子学的惊人成就是基于对掺杂磷和硼的硅的特性的详细了解。掺杂稀土和过渡离子的光学材料的物理特性的类似知识是快速和成功开发光电子设备所必需的，例如，适合在街道，高速公路和机场的明亮阳光下使用的激光屏幕。该项目将致力于借助在不同电磁波频率下工作的技术（多频光谱学）研究有意掺杂的光学晶体。预计这项研究将作出重大贡献的性质，性质和相互关系的缺陷所产生的掺杂，确定其结构上的原子/纳米级水平的基本理解，并最终定制光学材料的性能。这对于光通信技术至关重要。进行尖端的调查，学生和博士后将成为精通国家的最先进的实验技术;学习有前途的材料及其潜在的应用。所有这些都将改善他们的职业前景和未来活动的效率。* 技术摘要 * 掺杂材料，如钽酸锂和钽酸锂，可以制造各种光电元件：波导，调制器，激光器，光纤放大器，全息存储器等。过渡和稀土离子与周围离子的电和磁相互作用具有从千赫兹到千兆赫的频率。补充技术，包括电子顺磁共振，电子核双共振，和光谱仪将用于表征这些相互作用，并澄清原子/纳米级的杂质和本征缺陷的结构。预计这项研究将对这些缺陷的性质，性质和相互关系的基本理解做出重大贡献，并最终定制光学材料的性能。该项目的研究结果将对各种科学项目以及光通信技术的应用产生潜在影响。进行尖端的调查，学生和博士后将成为精通国家的最先进的实验技术，学习有前途的材料及其现代应用，并巩固在固态物理课程获得的知识。

****NON-TECHNICAL ABSTRACT****Fantastic achievements in present-day electronics are based on detailed knowledge of the properties of silicon doped with phosphorus and boron. Similar knowledge of physical properties of optical materials doped with rare-earth and transition ions is required for the fast and successful development of optoelectronics devices, for instance, laser screens suitable for a use by the bright sun light on streets, highways and airports. This project will be devoted to the investigation of intentionally doped optical crystals with the help of techniques, which operate at different frequencies of electromagnetic waves (multifrequency spectroscopy). It is expected that this research will give a significant contribution to the fundamental understanding of the nature, properties and interrelation of defects created by doping, determination of their structures on atomic/nanoscale levels, and finally, to tailoring properties of optical materials. This is of key importance for optical communication technologies. Conducting cutting-edge investigations, students and post-docs will become proficient in state-of-the art experimental techniques; learn promising materials and their potential applications. All these will improve their career prospects and efficiency of their future activity. ****TECHNICAL ABSTRACT****Doping materials like lithium niobate and tantalate allows creating various elements for optoelectronics: waveguides, modulators, lasers, fiber amplifiers, holographic memory etc. Electrical and magnetic interactions of transition and rare earth ions with surrounding ions have frequencies from kilohertz up to petahertz. Complementary techniques including electron paramagnetic resonance, electron nuclear double resonance, and optical spectrometers will be used in order to characterize these interactions and to clarify structures of impurity and intrinsic defects on atomic/nanoscale levels. It is expected that this research will give a significant contribution to the fundamental understanding of the nature, properties and interrelation of these defects, and finally, to tailoring properties of optical materials. Findings of the project will have a potential impact on various scientific projects, as well as on applications in optical communication technologies. Conducting cutting-edge investigations, students and post-docs will become proficient in state-of-the art experimental techniques, learn promising materials and their modern applications, and consolidate knowledge obtained in solid state physics courses.