Terahertz acoustic phase imaging

太赫兹声相位成像

• 批准号: 79295496
• 负责人: Professor Dr. Roland Kersting
• 金额: --
• 依托单位: Lehrstuhl für Photonik und Optoelektronik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/79295496?language=en
• 关键词: Terahertz; acoustic; phase; imaging

Recently, our group at the University of Munich developed a novel technique for detecting concealed objects with terahertz (THz) radiation. In our approach, we use THz radiation for detecting the acoustic phase of the objects while they perform a minute vibration. The technique is sensitive to virtually all materials, metals as well as dielectrics, and even organic materials. Fundamental parameters, such as the required vibration amplitude or the exposure to THz radiation are many orders below those values recommended for the exposure to humans, which makes the technique extremely attractive for applications in personnel screening. Future research should deliver: i) A demonstration on objects, which are comparable to real life situations and ii) the characterization of the technique with respect to applications. However, the Munich team has neither the equipment for scanning objects of reasonable size nor the experience with security related issues. The goal of the proposed collaboration between the groups of X.-C. Zhang at Rensselaer and of R. Kersting at Munich is to perform the first steps towards application oriented research. The intention of the three week travel to Rensselaer is to find out about the experimental capabilities at Rensselaer and how the research goals can be met by distributing the different challenges between both teams. Based on this outcome a joint proposal will be developed.

最近，我们的慕尼黑大学小组开发了一种新型技术，用于检测Terahertz（THZ）辐射的隐藏物体。在我们的方法中，我们使用THZ辐射来检测物体执行微小振动时的声相。该技术对几乎所有材料，金属以及介电材料甚至有机材料都很敏感。基本参数，例如所需的振动幅度或对THZ辐射的暴露是低于建议对人类暴露的值的许多订单，这使得该技术对人事筛查中的应用非常有吸引力。未来的研究应提供：i）关于对象的演示，与现实生活中的情况相当，ii）在应用方面的技术表征。但是，慕尼黑团队既没有用于扫描合理规模的对象的设备，也没有与安全有关的问题的经验。 X.-C的群体之间提议的合作的目标。伦斯勒（Rensselaer）和慕尼黑（R. Kersting）的张（R. Kersting）是迈向面向应用的研究的第一步。三周旅行到伦斯勒尔的目的是了解伦斯勒的实验能力以及如何通过在两支球队之间分发不同的挑战来实现研究目标。基于此结果，将制定共同的建议。