Analytical Applications of Nonlinear Laser Spectroscopy

非线性激光光谱的分析应用

• 批准号: 9200535
• 负责人: John Wright
• 金额: $ 43.28万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-04-15 至 1996-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9200535&HistoricalAwards=false
• 关键词: Analytical; Applications; Nonlinear; Laser; Spectroscopy

This project is in the general area of analytical and surface chemistry and in the subfield of nonlinear spectroscopy. During the tenure of this three-year continuing grant, Professor Wright and his students will investigate the utility of non-degenerate multi-wave mixing spectroscopies for new mode-selective and component-selective analyses. Mode selection is achieved by using multiple lasers to enhance spectroscopic transitions of molecules that are coupled to fixed vibrational resonances. Spectral line narrowing and component selection results from enhancing spectroscopic transitions of molecules that are coupled to fixed electronic resonances. This research extends Professor Wright's previous four-wave mixing investigations into the infrared, including the fingerprint region, where selective spectral enhancement of specific conformers will be explored. The feasibility of six-wave mixing techniques that have potential for the selective enhancement of specific Raman transitions will also be investigated. %%% This research lays the groundwork for the development of new analytical spectroscopic probes for complex chemical and biological systems.

这个项目是在分析和表面化学的一般领域和非线性光谱学的子领域。在这项为期三年的持续资助中，Wright教授和他的学生将研究非简并多波混合光谱在新型模式选择性和组分选择性分析中的应用。模式选择是通过使用多个激光器来增强与固定振动共振耦合的分子的光谱跃迁来实现的。谱线窄化和组分选择的结果来自于与固定电子共振耦合的分子的增强光谱跃迁。这项研究将Wright教授之前的四波混合研究扩展到红外线，包括指纹区域，其中将探索特定构象的选择性光谱增强。六波混频技术的可行性，有潜力的选择性增强特定的拉曼跃迁也将进行研究。本研究为开发用于复杂化学和生物系统的新型分析光谱探针奠定了基础。