Universal streak camera for versatile time-resolved spectroscopy

用于多功能时间分辨光谱的通用条纹相机

• 批准号: 474264-2015
• 负责人: KénaCohen, Stéphane
• 金额: $ 10.93万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=564941
• 关键词: Universal; streak; camera; versatile; time

Optically active materials are at the heart of much of the modern technology we are familiar with: the internet, smartphones, efficiencient lighting, solar cells, state-of-the-art tools for biodiagnostics, etc. The materials used for such applications rely on fast transitions between electronic states and their possible interplay with nuclear motion. The timescales for such transitions are extremely rapid: a billionth of a second for electrons and a trillionth of a second for nuclear motion. Understanding electronic and nuclear processes and their related interactions is crucial for engineering devices with new functionality, better efficiency and at a lower cost. The fast timescales, however, do not easily lend themselves to direct measurements. One tool, called a streak camera, is capable of directly recording the photons emitted from optically active materials on a timescale faster than a trillionth of a second. In contrast to competing approaches, it can do this with extraordinary sensitivity, while simultaneously resolving the energy of the emitted photons. We are requesting a "universal streak camera" that will allow measurements under the wide range of different operating conditions used by researchers at Polytechnique and U. Montreal. Our team will use the system for the characterisation of a broad class of organic, inorganic, hybrid and nanostructured materials. We will also implement state-of-the-art measurement techniques to shed light on the quantum nature single emitters, phase transitions in many-body systems and light scattering through biological tissues. Access to such a tool is direly needed in the greater Montreal area. It will serve to further enhance Canada's research competitiveness and play an important role in attracting and training HQP of the highest quality to our respective institutions.

光活性材料是我们所熟悉的许多现代技术的核心：互联网、智能手机、高效照明、太阳能电池、最先进的生物诊断工具等。用于此类应用的材料依赖于电子状态之间的快速转变及其与核运动的可能相互作用。这种转变的时间尺度非常快：电子是十亿分之一秒，核运动是万亿分之一秒。了解电子和核过程及其相关的相互作用对于具有新功能，更高效率和更低成本的工程设备至关重要。然而，快速的时间尺度并不容易让它们直接测量。一种被称为条纹相机的工具，能够在超过万亿分之一秒的时间尺度上直接记录光学活性材料发射的光子。与竞争对手的方法相比，它可以以非凡的灵敏度做到这一点，同时解析发射光子的能量。我们要求一种“通用条纹相机”，它可以在各种不同的操作条件下进行测量，这些条件被Polytechnique和U. Montreal的研究人员使用。我们的团队将使用该系统来表征广泛的有机、无机、杂化和纳米结构材料。我们还将实施最先进的测量技术，以阐明量子性质的单发射器，多体系统中的相变和光通过生物组织的散射。大蒙特利尔地区迫切需要获得这种工具。这将进一步提升加拿大的研究竞争力，并在吸引和培养高质素的人才到我们各自的院校方面发挥重要作用。