太赫兹辐射
照相混合
光学
收发机
带宽(计算)
合成孔径雷达
频率调制
太赫兹光谱与技术
光电子学
物理
激光器
远红外激光器
太赫兹超材料
计算机科学
电信
CMOS芯片
计算机视觉
作者
Andreas Keil,Shiva Mohammadzadeh,Lars Liebermeister,Lauri Schwenson,Björn Globisch,Fabian Friederich
标识
DOI:10.23919/eurad54643.2022.9924725
摘要
We demonstrate synthetic aperture terahertz imaging with an optoelectronic system based on continuous-wave lasers. A frequency-swept optical beat signal generates the terahertz field, which is then coherently detected by photomixing. The system is setup in a monostatic transceiver configuration in connection with a X-Y scanning stage. While the transceiver provides frequency tunability to up to 4 THz, it is operated with a frequency modulation bandwidth of 600 GHz within the lower terahertz regime (< 1 THz) in order to achieve a reasonable dynamic range at high measurement rates, allowing to do imaging with synthetic apertures and in the future real time measurements with MIMO systems
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