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RAYSECURs现有系统并开发新系统，公司需要一种频率更高、功率更高的太赫兹源。经典的真空电子器件（VED），如速调管和行波管（行波管）已经开发和使用了几十年，用于射频世代从kHz到GHz频段。为了将ded推进到太赫兹波段，必须缩小VED EM电路的尺寸，横向电路尺寸应小于1毫米。直到最近，制造具有如此小特征的VEDs是不可能的，但随着高精度微加工技术的发展，太赫兹VEDs的机会已经出现。在ENGAGE拨款的框架内，我们将：-审查经典的ved，并从按比例缩小到太赫兹波段的角度对其进行评估。-建立适合太赫兹世代的ved概念数值模型。-对制造典型太赫兹电子辐射器件所需的微加工工具进行初步分析。该项目将帮助一家创新型加拿大公司开展一项雄心勃勃的研发，以开发一种新颖的加拿大太赫兹源。这将巩固加拿大在太赫兹研究领域的世界领先地位。

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.