Thz detection using stokes-mueller polarimetry (phase 1)

使用 stokes-mueller 偏振法进行太赫兹检测（第 1 阶段）

• 批准号: 505829-2017
• 负责人: Ozaki, Tsuneyuki
• 金额: $ 4.37万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=690991
• 关键词: Thz; detection; using; stokes; mueller

The current proposal aims to improve and thus increase the value of a new intellectual property developed at the INRS for characterizing terahertz (THz) radiation, based on Stokes-Mueller polarimetry. THz sources and detectors have many important potential applications in the areas of spectroscopy, detection, and security. Various methods have been proposed and demonstrated in order to measure the spatial and temporal profile of the THz electric field. Among these, the electro-optic (EO) sampling method is widely used for THz time-domain spectroscopy (THz-TDS), due to the relatively straightforward physics involved and its wide bandwidth. However, the EO method suffers from several drawbacks. Our THz detection technique using Stokes-Mueller formalism has several advantages over the conventional EO-sampling method. First, by fully measuring the Stokes parameters of the probe beam, our technique solves the problem of over-rotation, thus allowing measurements with potentially unlimited dynamic range. Second, our technique also allows the measurement of the THz polarization state. Third, our technique can provide both temporal and spatial distribution of the THz electric field with a single measurement. Further, stability is greatly increased by eliminating any mechanically moving element.In this Idea to Innovation project, we propose to develop a working prototype of an equipment based on our invention, which could perform 2D measurement of both the THz electric field and polarization, with very large dynamic range. The successful implementation of this project could result in a unique equipment for THz detection, providing the Canadian manufacturing sector with a highly competitive product in the rapidly growing THz market.

目前的提案旨在改进并提高 INRS 开发的新知识产权的价值，该知识产权用于基于 Stokes-Mueller 偏振测量来表征太赫兹 (THz) 辐射。太赫兹源和探测器在光谱学、探测和安全领域具有许多重要的潜在应用。为了测量太赫兹电场的空间和时间分布，已经提出并论证了各种方法。其中，电光（EO）采样方法由于所涉及的物理过程相对简单且带宽较宽，被广泛用于太赫兹时域光谱（THz-TDS）。然而，EO 方法有几个缺点。我们使用 Stokes-Mueller 形式的太赫兹检测技术比传统的电光采样方法具有多个优势。首先，通过全面测量探测光束的斯托克斯参数，我们的技术解决了过度旋转的问题，从而允许具有潜在无限动态范围的测量。其次，我们的技术还可以测量太赫兹偏振态。第三，我们的技术可以通过一次测量提供太赫兹电场的时间和空间分布。此外，通过消除任何机械移动元件，稳定性大大提高。在这个从创意到创新的项目中，我们建议开发一个基于我们发明的设备的工作原型，它可以对太赫兹电场和偏振进行二维测量，非常大的动态范围。该项目的成功实施可能会产生一种独特的太赫兹检测设备，为加拿大制造业在快速增长的太赫兹市场中提供极具竞争力的产品。