Low-cost fiber-based broadband terahertz source

低成本光纤宽带太赫兹源

• 批准号: 516416-2017
• 负责人: Ménard, JeanMichel
• 金额: $ 1.82万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640150
• 关键词: Low; cost; fiber; based; broadband

The field of time-resolved terahertz (THz) spectroscopy has grown very rapidly over the last few years. This non-invasive optical technique, based on the generation of optical radiation in the mid- and far-infrared region, can reveal valuable information about the nature of various materials and compounds. This information cannot be perceived by the naked eye, nor by the most sophisticated cameras or even x-ray scanners. Since THz spans an ideal energy range to interact with various elementary excitations including phonons, electrons and molecular vibrations, its adaptation to characterization technologies has an enormous potential of application in many scientific and industrial sectors as diverse as medical diagnostics, environmental science, semiconductors devices and security. For all these applications, the use of a broad THz source for spectroscopy, which extends spectrally beyond the typical limit of 4 THz, provides access to key signature resonances resulting in enhanced identification capabilities for many compounds. The high costs and bulkiness of these systems are the main factors currently limiting the market for broadband time-resolved THz spectrometer. The goal of this collaboration between OZ Optics and the research group of Dr. Ménard at uOttawa is to work on a more affordable, compact and broadband THz source based on low-cost lasers and proven optical fiber technology. Combining their expertise in this proposal will allow dynamic research and enhanced potential for the development of commercial applications.

时间分辨太赫兹（THz）光谱学领域在过去几年中发展非常迅速。这种非侵入式光学技术基于在中红外和远红外区域产生光辐射，可以揭示有关各种材料和化合物性质的有价值的信息。这些信息不能被肉眼感知，也不能被最先进的相机甚至X射线扫描仪感知。由于THz跨越了理想的能量范围，可以与包括声子，电子和分子振动在内的各种基本激发相互作用，因此其对表征技术的适应在许多科学和工业领域具有巨大的应用潜力，如医疗诊断，环境科学，半导体设备和安全。对于所有这些应用，使用光谱学的宽THz源，其在光谱上延伸超过4 THz的典型限制，提供了对关键特征共振的访问，从而增强了许多化合物的识别能力。这些系统的高成本和笨重是目前限制宽带时间分辨THz光谱仪市场的主要因素。OZ Optics与uOttawa的Ménard博士的研究小组合作的目标是基于低成本激光器和成熟的光纤技术，开发更实惠，紧凑和宽带的THz源。在这项提案中结合他们的专业知识将使动态研究和商业应用开发的潜力得到增强。