Purchase of an Ultrafast Optical Laser System

购买超快光学激光系统

• 批准号: 0076479
• 负责人: Paul Hopkins
• 金额: $ 25.64万
• 依托单位: University of Washington
• 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=0076479&HistoricalAwards=false
• 关键词: Purchase; Ultrafast; Optical; Laser; System

With this award from the Chemistry Research Instrumentation and Facilities (CRIF) Program, the Department of Chemistry at the University of Washington will acquire ultrafast lasers and other equipment for an ultrafast optical spectroscopy center. This equipment will enhance research in a number of areas including a) the characterization of optical and nonlinear optical phenomena in condensed matter materials; b) studies of energy transfer and electron transfer by which plants and photosynthetic bacteria capture the energy of sunlight; c) investigation of the dynamics of halogen-containing compounds; and d) studies of the twisting and bending dynamics of various linear and circular DNAs and DNA/protein complexes. 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 reaactivity 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，华盛顿大学化学系将为超快光谱中心购买超快激光器和其他设备。该设备将加强多个领域的研究，包括：a）凝聚态材料中光学和非线性光学现象的表征； b) 研究植物和光合细菌捕获阳光能量的能量转移和电子转移； c) 含卤素化合物的动力学研究； d) 研究各种线性和环状 DNA 以及 DNA/蛋白质复合物的扭曲和弯曲动力学。 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，原子之间的键被破坏或形成。 超快光学技术可以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集太阳能，创造新的、更高效的光电材料，并了解许多环境过程的基本步骤。 简而言之，超快光谱有望揭示化学反应的微观细节。