Scaling down classical vacuum electronic devices to make them suitable for THz band

RAYSECUR是一家加拿大公司，专门设计和生产用于安全应用的太赫兹成像系统。为了升级现有的系统和开发新的系统，RAYEARS公司需要更高频率和更高功率的太赫兹源，经典的真空电子器件（VED）如速调管和行波管（TWT）已经开发和使用了几十年，用于产生kHz到GHz频段的RF.为了将VED推向THz频段，VED电磁电路的尺寸必须按比例缩小，使电路的横向尺寸小于1毫米。制造这样一个小功能的VED是不可能的，直到最近，但随着高度精确的微加工技术的发展，出现了太赫兹VEDshas的机会。在ENGAGE资助的框架内，我们将：-审查经典的VED和评估他们从缩小到太赫兹波段的角度来看。- 建立适用于THz产生的VED概念性数值模型。-对制造典型THz VED所需的微加工工具进行初步分析。该项目将帮助一家创新的加拿大公司开始雄心勃勃的研发，以开发一种新的加拿大THz源。这将巩固加拿大在太赫兹研究方面的世界领先地位。

RAYSECUR is a Canadian company specialized in the design and production of terahertz imaging systems forsecurity applications. In order to upgrade RAYSECURs existing systems and develop new ones companyneeds a terahertz source with higher frequency and higher power.Classical vacuum electronic devices (VED) such as klystrons and traveling wave tubes (TWT) have beendeveloped and used for many decades for RF generations from kHz to GHz band. In order to push VEDs intothe THz band, the size of the VED EM circuit must be scaled down that the transverse circuit dimensionsshould be less than a millimeter. Fabrication of the VEDs with such a small feature was not possible untilrecently but with development of highly accurate microfabrication techniques, an opportunity for THz VEDshas emerged.In the frame of ENGAGE grant we will:-Review classical VEDs and evaluate them from the point of view of scaling down to the THz band. -Buildconceptual numerical models of VEDs suitable for the THz generation.-Perform preliminary analysis of microfabrication tools needed to fabricate typical THz VEDs.The project will help an innovative Canadian company to start an ambitious R&D in order to develop a novelCanadian THz sources. This will consolidate the position of Canada as a world leader in the terahertz research.