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

****非技术摘要****当今电子学的惊人成就是基于对磷和硼掺杂硅的特性的详细了解。对掺杂稀土和跃迁离子的光学材料的物理性质有类似的了解，对于光电子器件的快速和成功开发是必需的，例如，适合在街道、高速公路和机场使用的明亮阳光的激光屏幕。本项目将致力于研究在不同频率电磁波（多频光谱）下工作的有意掺杂光学晶体。预计本研究将对理解掺杂产生的缺陷的性质、性质和相互关系，确定其在原子/纳米尺度上的结构，最终对光学材料的定制特性做出重大贡献。这对光通信技术具有重要意义。通过前沿研究，学生和博士后将熟练掌握最先进的实验技术；了解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，如铌酸锂和钽酸盐，可以创建各种光电子元件：波导，调制器，激光器，光纤放大器，全息存储器等。跃迁和稀土离子与周围离子的电和磁相互作用频率从千赫兹到千赫兹不等。互补技术包括电子顺磁共振、电子核双共振和光谱学，将用于表征这些相互作用，并在原子/纳米尺度上澄清杂质和内在缺陷的结构。期望本研究将对这些缺陷的性质、性质和相互关系的基本认识，并最终对光学材料的裁剪特性做出重大贡献。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。通过开展前沿研究，学生和博士后将熟练掌握最先进的实验技术，了解有前途的材料及其现代应用，巩固在固态物理课程中获得的知识。

****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.