Optical Coherence Studies of Rare Earth Doped Glasses (Chemistry)

本研究涉及使用光学相干技术，如光子回波和空穴燃烧实验，来研究光学诱导折射率变化或二次谐波产生的稀土掺杂玻璃。这些光致现象被用于许多光纤器件，但缺乏对潜在微观机制的详细了解。目的是深入了解这些光诱导变化的微观性质。研究的一部分集中在稀土离子的局部结构和动力学上，另一部分集中在主体玻璃的动力学上。这些实验的结果将提供与玻璃中光致现象相关的微观变化的见解，并可能导致更有效的材料和设备的开发。互动活动包括教授物理化学高级本科课程，为本科生提供建议和指导，组织一系列研讨会，并为化学系的学生和教师组织一系列研讨会。

This research involves the use of optical coherence techniques, such as photon echo and hole-burning experiments, to study rare earth doped glasses in which a refractive index change or second harmonic generation has been optically induced. These photoinduced phenomena are being used in a number of fiber optic devices, but a detailed understanding of the underlying microscopic mechanism is lacking. The objective is to gain insight about the microscopic nature of these photoinduced changes. One part of the research focuses on the local structure and dynamics of the rare earth ion whereas a second part deals with the dynamics of the host glass. The results of these experiments will provide insight into the microscopic changes associated with photoinduced phenomena in glasses and may lead to the development of more efficient materials and devices. The interactive activities consist of teaching an advanced undergraduate courses in Physical Chemistry, advising and mentoring of undergraduate students, organizing a seminar series, and organizing a seminar series for students and faculty in the Chemistry department.