SBIR Phase I: Cavity-Enhanced Direct Frequency Comb Spectroscopy: A Multi-Species Technology for Fingerprinting Fugitive Emissions

SBIR 第一阶段：腔增强直接频率梳光谱：一种用于对逸散发射进行指纹识别的多物种技术

• 批准号: 1448456
• 负责人: Florian Adler
• 金额: $ 13.33万
• 依托单位: Tiger Optics, LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1448456&HistoricalAwards=false
• 关键词: SBIR; Phase; Cavity; Enhanced; Direct

This Small Business Innovation Research Phase I project will be a pivotal step towards the development of the first commercial analyzer based on Cavity-Enhanced Direct Frequency Comb Spectroscopy (CE-DFCS). This new technique overcomes the traditional divide between narrow-band, highly specific, laser-based techniques and broadband, low-resolution, multi-species methods. CE-DFCS offers the advantages of both categories in a single instrument, opening a realm of possibilities. For the proposed application of fugitive emissions monitoring, CE-DFCS will help to obtain valuable data to better understand and mitigate methane emissions from both agricultural activities and natural gas leakage. The latter issue represents an enormous problem that not only accelerates climate change, but also causes millions of dollars in economic losses and represents a risk to public safety. These issues will drive an increasing market for this type of monitoring technology: the approximately $50 million current market could potentially double within five years. Beyond this application, the versatility and capability inherent in CE-DFCS will also make it widely applicable to other industries, e.g. for real-time process control and chemometrics, where it can ultimately displace complex instruments such as Fourier transform spectrometers and gas chromatographs.The intellectual merit of this project is finding a pathway to making CE-DFCS sufficiently robust for portable precision measurements in climate research and pollution mitigation. This technology represents a major change from present day spectroscopic technologies, such as Tunable Diode Laser, Cavity Ring-Down, and Fourier Transform Spectroscopy. The resulting instrument will allow researchers and industry to more precisely identify and quantify emissions from pipelines, wells, farms, landfills, forests, swamps, and other sources. While experiments from academia have demonstrated that CE-DFCS has great potential for this application, little work has focused on robustness necessary for field use. Phase I research will focus on the critical need for long-term stability in the coupling between the frequency comb and the optical enhancement cavity, which must be impervious to vibrations and environmental changes to a much higher degree than previously demonstrated. Therefore, the research objective is to properly design, integrate and optimize the electronics with a commercial optical cavity, for robust and self-optimizing comb-cavity coupling. With the proposed design and optimized control parameters and feedback mechanics, excellent long-term stability and vibration resistance is anticipated. The obtained results will serve as a basis to further develop and optimize CE-DFCS for commercial applications.

这个小型企业创新研究第一阶段项目将是朝着开发第一个基于腔增强型直接频率梳状光谱仪(CE-DFCS)的商用分析仪迈出的关键一步。这项新技术克服了窄带、高特异性、基于激光的技术与宽带、低分辨率、多物种方法之间的传统鸿沟。CE-DFCS在一台仪器中提供了这两个类别的优点，开辟了一个可能性的领域。对于拟议的逃逸排放监测应用，CE-DFCS将有助于获得有价值的数据，以更好地了解和减少农业活动和天然气泄漏造成的甲烷排放。后一个问题是一个巨大的问题，不仅会加速气候变化，还会造成数百万美元的经济损失，并对公共安全构成威胁。这些问题将推动这类监测技术的市场不断增长：目前价值约5000万美元的市场可能在五年内翻一番。除了这一应用，CE-DFCS固有的多功能性和能力也将使其广泛应用于其他行业，例如实时过程控制和化学计量学，在这些行业中，它最终可以取代复杂的仪器，如傅立叶变换光谱仪和气相色谱仪。该项目的智力优势是找到了一条途径，使CE-DFCS足够健壮，可以用于气候研究和污染缓解中的便携式精密测量。这项技术代表着与当今的光谱技术相比的重大变化，如可调谐二极管激光器、腔衰荡和傅里叶变换光谱。由此产生的仪器将使研究人员和工业界能够更准确地识别和量化管道、油井、农场、垃圾填埋场、森林、沼泽和其他来源的排放。虽然学术界的实验已经证明CE-DFCS在这一应用中具有巨大的潜力，但很少有人关注现场使用所需的稳健性。第一阶段的研究将集中在频率梳和光学增强腔之间的耦合的长期稳定性的迫切需要，这种耦合必须不受振动和环境变化的影响，其程度必须比以前证明的要高得多。因此，本文的研究目标是合理地设计、集成和优化带有商用光腔的电子器件，以实现稳健和自优化的梳状腔耦合。通过所提出的设计和优化的控制参数和反馈机制，预期具有良好的长期稳定性和抗振性。所得结果将为进一步开发和优化CE-DFCS的商业应用奠定基础。