Acquisition of a Femtosecond/Picosecond Laser for Ultrafast Spectroscopic Probes of the Structure and Excited State Dynamics of Molecular Systems

在获得重大研究仪器(MRI)计划的这一奖项后，阿克伦大学激光和光学光谱中心将获得一台飞秒/皮秒激光器，用于分子体系的结构和激发态动力学的超快光谱探测。该设备将加强以下领域的研究：1)新型纳米级、含卟啉、树枝状光合作用模拟物的时间分辨光学光谱；2)芳香族团簇的平衡几何结构和激发态动力学；3)实时测量含羟基分子中的分子内振动-能量重新分配(IVR)；以及4)特殊卟啉的时间分辨光学光谱。飞秒/皮秒激光提供超快的相干可见光或红外光脉冲，使研究人员能够获得关于快速发生的化学反应的重要信息。它的使用可能会使我们对活性和非活性分子的性质的理解有所突破。来自俄亥俄州一些邻近大学和学院的研究人员将可以使用这种激光系统。

With this award from the Major Research Instrumentation (MRI) Program, the Center for Laser and Optical Spectroscopy at the University of Akron will acquire a femtosecond/picosecond laser for ultrafast spectroscopic probes of the structure and excited state dynamics of molecular systems. This equipment will enhance research in the following areas: 1) time-resolved optical spectroscopy of novel nanoscale, porphyrin-containing, dendritic photosynthetic mimics; 2) equilibrium geometries and excited-state dynamics of aromatic clusters; 3) real-time measurements of intramolecular vibration-energy redistribution (IVR) in OH-containing molecules; and 4) time-resolved optical spectroscopy of unusual porphyrins.A femtosecond/picosecond laser provides ultrafast pulses of coherent visible or infrared light, which enables researchers to obtain important information about fast occurring chemical reactions. Its use may enable breakthroughs in our understanding of the properties of reactive and nonreactive molecules. This laser system will be available to researchers from a number of neighboring universities and colleges in Ohio.