There is much interest in employing terahertz (THz) radiation across a range of imaging applications but so far technologies have struggled to achieve the necessary framerates. Here we demonstrate a THz imaging system based upon efficient THz-to-optical conversion in atomic vapour, where full-field images can be collected at ultra-high speeds using conventional optical camera technology. For a 0.55~THz field we show an effective 1,cm${}^2$ sensor with near diffraction-limited spatial resolution and a minimum detectable power of $190\pm 30$,fWs${}^{-1/2}$, per $40\times 40$,m pixel capable of video capture at 3000 frames per second. This combination of speed and sensitivity represents a step change in the state of the art of THz imaging, and will likely lead to its uptake in wider industrial settings.

中文翻译：

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使用原子蒸气以千赫兹帧频进行全场太赫兹成像

在整个成像应用中都采用太赫兹（THz）辐射引起了人们的极大兴趣，但是到目前为止，技术一直在努力实现必要的帧速率。在这里，我们演示了一种基于原子蒸气中有效THz到光学转换的THz成像系统，其中可以使用传统的光学相机技术以超高速收集全场图像。对于0.55〜THz的场，我们显示出有效的1，cm${}^2$ 具有接近衍射极限的空间分辨率和最小可检测功率的传感器 $190\pm 30$，fWs${}^{-\mathrm{1个}/2}$每 $40\times 40$，m像素，能够以每秒3000帧的速度捕获视频。速度和灵敏度的这种结合代表了太赫兹成像技术的最新发展，并有可能导致其在更广泛的工业环境中被采用。