Excitation and Energy-Transfer of Electronic and Molecular Defects in Ordered and Disordered Ionic Solids

有序和无序离子固体中电子和分子缺陷的激发和能量转移

• 批准号: 9223230
• 负责人: Fritz Luty
• 金额: $ 30万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-05-01 至 1996-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9223230&HistoricalAwards=false
• 关键词: Excitation; Energy; Transfer; Electronic; Molecular

This project studies the electronic and vibrational excitation, energy-migration, and relaxation processes, involving various molecular and electronic defects in ordered and disordered ionic solids. Research will include electron-vibration energy transfer processes between F-centers and molecular defects will be investigated using resonance Raman scattering, vibrational luminescence and Fourier transform infra-red spectroscopy. A newly developed technique will be used to produce high quality ultra-thin crystals in the range 0.2 - 100 >m. The influence of the mesoscopic size on the films on the energy-transfer and phase behavior of the materials will be investigated and may lead to new optical materials or research possibilities. %%% This project involves the study of the optical properties of materials which are typically used in laser devices. One area of interest is that of energy transfer processes that need to be understood in order to optimize the optical and lasing properties of materials. Another important area is that of thin films of optical materials, where the reduced size of the medium changes the properties of crystals in new and incompletely understood ways. The study of these materials may lead to new laser materials or devise applications.

本项目研究有序和无序离子固体中的电子和振动激发、能量迁移和弛豫过程，涉及各种分子和电子缺陷。研究将包括F中心和分子缺陷之间的电子振动能量传递过程，将使用共振拉曼散射、振动发光和傅里叶变换红外光谱来研究。一种新开发的技术将被用来生产0.2-100微米的高质量超薄晶体。介观尺寸对材料的能量传递和相行为的影响将被研究，并可能导致新的光学材料或研究的可能性。%这个项目涉及研究激光设备中通常使用的材料的光学特性。一个感兴趣的领域是需要了解的能量传递过程，以便优化材料的光学和激光性能。另一个重要的领域是光学材料的薄膜，其中介质尺寸的减小以新的和不完全了解的方式改变了晶体的性质。对这些材料的研究可能导致新的激光材料或设计应用。