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，我们慕尼黑大学的团队开发了一种利用太赫兹（THz）辐射检测隐藏物体的新技术。在我们的方法中，我们使用太赫兹辐射来检测物体进行微小振动时的声学相位。该技术几乎对所有材料、金属和电介质，甚至有机材料都很敏感。基本参数，例如所需的振动幅度或太赫兹辐射的暴露量，比人类暴露的推荐值低许多数量级，这使得该技术对于人员筛查应用极具吸引力。未来的研究应该提供：i）与现实生活中的情况相当的物体演示，以及 ii）该技术在应用方面的表征。然而，慕尼黑团队既没有扫描合理尺寸物体的设备，也没有处理安全相关问题的经验。 X.-C 小组之间拟议合作的目标。伦斯勒大学的张和慕尼黑的 R. Kersting 将迈出面向应用研究的第一步。前往伦斯勒进行为期三周的旅行的目的是了解伦斯勒的实验能力以及如何通过在两个团队之间分配不同的挑战来实现研究目标。根据这一结果，将制定一项联合提案。