Linear and Nonlinear Resonance Raman Studies of Photo- dissociation

在实验物理化学项目的支持下，Ziegler教授正在开发和使用新颖的拉曼光谱技术来研究小多原子分子中光解过程的动力学，其分辨率足以检测单个旋转振动水平。Ziegler的实验和理论工作扩展了我们对光解过程及其随初始制备态能量和量子数变化的详细理解。以前开发的旋转共振拉曼技术被用于测量短时间（20飞秒到5皮秒）准束缚激发态水平的旋转振动量子特定寿命。共振超拉曼将工作扩展到通过近紫外光子的双光子过程可以获得的紫外中的解离分子激发态。计划中的工作还包括使用共振相干反斯托克斯拉曼光谱（CARS）来实现更高的旋转量子分辨率，并允许研究更大的分子。

With support from the Experimental Physical Chemistry Program, Professor Ziegler is developing and using novel Raman spectroscopic techniques to investigate the dynamics of photodissociation processes in small polyatomic molecules at a resolution sufficient to examine individual rotational-vibrational levels. Ziegler's experimental and theoretical work is expanding our detailed understanding of the photodissociation process and its variation with the energy and quantum numbers of the initially prepared state. Previously developed rotational resonance Raman techniques are being used to measure rovibrational quantum specific lifetimes of short-lived (20 femtoseconds to 5 picoseconds) quasi-bound excited state levels. Resonance hyper-Raman is extending the work to dissociative molecular excited states in the vuv accessible via two-photon processes with near-uv photons. Planned work also includes the use of resonant Coherent Anti-Stokes Raman Spectroscopy (CARS) to achieve greater rotational quantum resolution and allow the study of larger molecules.