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

该项目研究电子和振动激发， 能量迁移和弛豫过程，涉及各种 有序和无序离子中的分子和电子缺陷 固体 研究将包括电子振动能量转移 F-中心和分子缺陷之间的过程将是 研究使用共振拉曼散射，振动 荧光和傅里叶变换红外光谱。 一个新 开发的技术将用于生产高质量的超薄 在0.2 - 100 μ m范围内的晶体。 的影响 介观尺寸对薄膜的能量传递和相 材料的行为将被调查，并可能导致新的 光学材料或研究的可能性。 %%% 该项目涉及的光学性质的研究， 这些材料通常用于激光器件。 的一个区域 感兴趣的是能量转移过程， 为了优化光学和激光特性 的材料。 另一个重要的领域是， 光学材料，其中减小的介质尺寸改变了 以新的和不完全理解的方式研究晶体的性质。 对这些材料的研究可能会导致新的激光材料或 设计应用程序。

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.