Acquisition of a millimeter wave vector network analyzer : seismology without seismometers

购买毫米波矢量网络分析仪：无需地震仪的地震学

• 批准号: 0421292
• 负责人: John Scales
• 金额: $ 23.1万
• 依托单位: Colorado School of Mines
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0421292&HistoricalAwards=false
• 关键词: Acquisition; millimeter; wave; vector; network

0421292ScalesThis Major Research Instrumentation (MRI) Program grant support acquisition of a millimeter wave vector network analyzer (MWVNA) tunable from 8 GHz to 1 THz and associated microwave hardware to develop a method for non-contact laser excitation and detection of ultrasonic waves in earth materials. The terahertz network analyzer will complement existing laser and ultrasonics equipment in the Physical Acoustics Laboratory in the Department of Geophysics at the Colorado School of Mines. As part of this proposal, the PI's will try to extend recent laboratory successes in imaging acoustic waves excited on the surfaces of granite and aluminum slabs via laser to field applications using higher frequency sources (100'a of GHz to 1 THz) and the acquired detection system. A method of non-contact seismology is envisioned which could have broad applications in the geosciences (e.g., imaging of highly polluted subsurface environments), archaeology, and civil and military engineering (e.g., non-contact detection of unexploded ordnance (UXO)).

本主要研究仪器（MRI）项目资助采购一台8 GHz至1 THz可调谐的毫米波矢量网络分析仪（MWVNA）和相关微波硬件，以开发一种非接触式激光激发和探测地球材料中的超声波的方法。太赫兹网络分析仪将补充科罗拉多矿业学院地球物理系物理声学实验室现有的激光和超声波设备。作为该提案的一部分，PI将尝试扩展最近在实验室成功的通过激光在花岗岩和铝板表面激发声波成像，并使用更高频率源（100a GHz至1thz）和获得的探测系统进行现场应用。设想了一种非接触式地震学方法，可广泛应用于地球科学（例如，对高度污染的地下环境进行成像）、考古学以及民用和军事工程（例如，对未爆弹药进行非接触式探测）。