CAREER: Coherent Mid-Infrared Molecular Dispersion Spectroscopy for Ultra-Sensitive Chemical Detection

职业：用于超灵敏化学检测的相干中红外分子色散光谱

• 批准号: 0954897
• 负责人: Gerard Wysocki
• 金额: $ 40.58万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-02-01 至 2016-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0954897&HistoricalAwards=false
• 关键词: CAREER; Coherent; Mid; Infrared; Molecular

The research objective of this Faculty Early Career Development (CAREER) award is to study a new spectroscopic sensing technique. The planned approach takes advantage of the coherent laser radiation and combines the advantages of direct laser absorption spectroscopy with a precision and noise suppression capability that are characteristic to indirect, zero-baseline spectroscopic sensing methods. The research will include theoretical investigations of the molecular dispersion, spectroscopic modeling, studies of optimum detection techniques, and research on mid-IR lasers optimized for dispersion spectroscopy. To overcome the limitations of existing laser absorption spectroscopy techniques, a novel approach based on the measurement of dispersion will be investigated. Included in the investigation are fundamental physics and the solution of engineering problems in the construction of new EC-QC lasers. Sensitive and versatile chemical detection technology and new implementations in variety of field applications including distributed atmospheric sensor networks, and remote chemical detection are the expected outcome.The research is expected to lead to development of highly sensitive gas and chemical sensors capable of pptv-level resolution. The application of the proposed technology to trace-gas detection will result in more sensitive, smaller and more versatile sensors. New applications including large area spectroscopic sensor networks for atmospheric monitoring, remote chemical sensing in defense and security, or hand-held/wearable gas exposure monitoring will benefit from the proposed research. How the interdisciplinary nature of the project would provide a spectrum of education and training opportunities integrated with the research goals is presented.

该学院早期职业发展（CAREER）奖的研究目标是研究一种新的光谱传感技术。计划的方法利用相干激光辐射，并将直接激光吸收光谱的优点与间接、零基线光谱传感方法特有的精度和噪声抑制能力结合起来。该研究将包括分子色散的理论研究、光谱建模、最佳检测技术的研究以及针对色散光谱优化的中红外激光器的研究。为了克服现有激光吸收光谱技术的局限性，将研究一种基于色散测量的新方法。研究内容包括基础物理以及新型 EC-QC 激光器构造中工程问题的解决方案。灵敏且多功能的化学检测技术以及在包括分布式大气传感器网络和远程化学检测在内的各种现场应用中的新实现是预期的成果。该研究预计将导致开发具有pptv级分辨率的高灵敏度气体和化学传感器。将所提出的技术应用于痕量气体检测将产生更灵敏、更小和更通用的传感器。新的应用包括用于大气监测的大面积光谱传感器网络、国防和安全中的远程化学传感或手持/可穿戴气体暴露监测将受益于拟议的研究。 介绍了该项目的跨学科性质如何提供与研究目标相结合的一系列教育和培训机会。