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

光学材料中稀土和过渡离子的多频光谱

• 批准号: 0805175
• 负责人: Galina Malovichko
• 金额: $ 34.2万
• 依托单位: Montana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0805175&HistoricalAwards=false
• 关键词: Multifrequency; Spectroscopy; Rare; Earth; Transition

****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.

*非技术摘要*现代电子学的奇妙成就是建立在对掺磷和掺硼的硅特性的详细了解基础上的。要快速而成功地开发光电子器件，需要对掺杂稀土和过渡离子的光学材料的物理性质有类似的知识，例如，适合在街道、高速公路和机场的强烈太阳光下使用的激光屏幕。这个项目将致力于利用在不同频率的电磁波(多频光谱学)下工作的技术来研究有意掺杂的光学晶体。希望这项研究将对从根本上理解掺杂产生的缺陷的性质、性质和相互关系，在原子/纳米水平上确定缺陷的结构，以及最终对光学材料的性能调整做出重要贡献。这对于光通信技术来说是至关重要的。进行前沿研究，学生和博士后将精通最先进的实验技术，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，如铌酸锂和钽酸锂，可以为光电子学创造各种元件：波导、调制器、激光器、光纤放大器、全息存储器等。过渡态离子和稀土离子与周围离子的电和磁相互作用的频率从千赫到拍赫兹。将使用包括电子顺磁共振、电子核双共振和光学光谱仪在内的补充技术来表征这些相互作用，并在原子/纳米尺度上澄清杂质和本征缺陷的结构。希望这项研究将对从根本上理解这些缺陷的性质、性质和相互关系，并最终为光学材料的性能调整做出重要贡献。该项目的发现将对各种科学项目以及光通信技术的应用产生潜在影响。在进行前沿研究的过程中，学生和博士后将精通最先进的实验技术，学习有前途的材料及其现代应用，并巩固在固体物理课程中获得的知识。