Acquisition of an Ultrafast Tunable Laser Source

获得超快可调谐激光源

• 批准号: 0078338
• 负责人: Frederick Dahlquist
• 金额: $ 17.65万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0078338&HistoricalAwards=false
• 关键词: Acquisition; Ultrafast; Tunable; Laser; Source

With this award from the Chemistry Research Instrumentation and Facilities (CRIF) Program, the Department of Chemistry at the University of Oregon in Eugene will acquire an ultrafast tunable laser source. This equipment will enhance research in a number of areas including a) vibrational spectroscopic measurements at liquid surfaces; b) self-assembly of inorganic/organic multilayer thin films; c) pump/probe studies of cage effects in organometallic radical chemistry; and d) carbon-rich networks and materials based on dehydrobenzoannulenes. Ultrafast spectroscopy allow scientists to investigate chemistry that occurs in the picosecond (10^-12) and femtosecond (10^-15) time regimes. On these extremely short timescales, atoms move and bonds between atoms are broken or formed. Ultrafast optical techniques allow for the investigation of chemical reaction dynamics during the course of the reaction itself. The detailed picture of chemical reactivity provided by ultrafast spectroscopy has allowed researchers to explore how plants harvest solar energy, to create new and more efficient optoelectronic materials, and to understand the fundamental steps in many environmental processes. In short, ultrafast spectroscopy holds the promise of unraveling the microscopic details of chemical reactivity.

凭借化学研究仪器和设施（CRIF）计划的这一奖项，尤金的俄勒冈州大学化学系将获得超快可调谐激光源。这一设备将加强若干领域的研究，包括：（a）液体表面的振动光谱测量;（B）无机/有机多层薄膜的自组装;（c）有机金属自由基化学中笼效应的泵/探测研究;（d）以脱氢苯并轮烯为基础的富碳网络和材料。 超快光谱学使科学家能够研究皮秒（10^-12）和飞秒（10^-15）时间范围内发生的化学反应。 在这些极短的时间尺度上，原子移动，原子之间的键断裂或形成。 超快光学技术允许在反应过程中研究化学反应动力学。 超快光谱提供的化学反应的详细图像使研究人员能够探索植物如何收获太阳能，创造新的更有效的光电材料，并了解许多环境过程中的基本步骤。 简而言之，超快光谱学有望揭示化学反应的微观细节。