High Pressure Studies of Cr and Mn Near-Infrared Solid State Cover Materials

Cr、Mn近红外固态覆盖材料的高压研究

• 批准号: 9629990
• 负责人: Kevin Bray
• 金额: $ 32.95万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-15 至 1999-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9629990&HistoricalAwards=false
• 关键词: Pressure; Studies; Cr; Mn; Near

9629990 Bray This research project investigates the energy levels and vibronic interactions of transition-metal dopants in ionic crystals focusing on high-pressure photoluminescence studies of recently discovered Cr4+ -activated solid state laser materials. The theme of the proposed research is to address uncertainties surrounding the properties of Cr4+ materials through high pressure luminescence, excitation, and lifetime measurements to relate luminescence properties to crystal field strength, and to understand the effect of interstate mixing on luminescence properties. Related studies of isoelectronic Mn5+ , currently known to occur only as a strong field ion in a few oxides will also be considered in the project. %%% The project is interdisciplinary combining fundamental materials chemistry and materials science synthesis and processing studies with advanced characterization tools and analysis methods to address forefront issues in a topical area of strong technological relevance and high potential payoff. The research will contribute basic materials science knowledge at a fundamental level to several aspects of advanced photonic devices critical to high bandwidth communications technology. Additionally, the knowledge and understanding gained from this research project is expected to contribute in a general way to improving the performance of advanced devices and communications systems by providing a fundamental understanding and a basis for designing and producing improved materials, and materials combinations. An important feature of the program is the integration of research and education through the training of students in a fundamentally and technologically significant area. ***

9629990 Bray本研究项目研究离子晶体中过渡金属掺杂剂的能级和电子振动相互作用，重点是最近发现的Cr 4+激活固态激光材料的高压光致发光研究。 拟议的研究的主题是通过高压发光，激发和寿命测量来解决围绕Cr4+材料的性质的不确定性，将发光性质与晶体场强联系起来，并了解状态间混合对发光性质的影响。目前已知仅在少数氧化物中作为强场离子发生的等电子Mn5+的相关研究也将在该项目中考虑。该项目是跨学科的，将基础材料化学和材料科学合成与加工研究与先进的表征工具和分析方法相结合，以解决具有强大技术相关性和高潜在回报的热门领域的前沿问题。 这项研究将有助于在基础水平的基本材料科学知识的几个方面的先进光子器件的关键高带宽通信技术。 此外，从该研究项目中获得的知识和理解预计将通过提供设计和生产改进材料和材料组合的基本理解和基础，以提高先进设备和通信系统的性能。 该计划的一个重要特点是通过在一个基本和技术上重要的领域对学生进行培训来整合研究和教育。***