A passive terahertz video camera based on lumped element kinetic inductance detectors.
A passive terahertz video camera based on lumped element kinetic inductance detectors.
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DOI：
10.1063/1.4941661
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发表时间：
2015-11
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通讯作者：
S. Rowe;E. Pascale;S. Doyle;C. Dunscombe;P. Hargrave;Andreas Papageorgio;K. Wood;P. Ade;P. Barry;A. Bideaud;T. Brien;C. Dodd;W. Grainger;J. House;P. Mauskopf;P. Moseley;L. Spencer;R. Sudiwala;C. Tucker;Ian D. Walker
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文献类型：
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作者：
S. Rowe;E. Pascale;S. Doyle;C. Dunscombe;P. Hargrave;Andreas Papageorgio;K. Wood;P. Ade;P. Barry;A. Bideaud;T. Brien;C. Dodd;W. Grainger;J. House;P. Mauskopf;P. Moseley;L. Spencer;R. Sudiwala;C. Tucker;Ian D. Walker
我们已经开发了一个无源350 GHz（850 μm）的视频摄像机演示集总元件动态电感探测器（LEKID）-最初设计的远红外天文学-作为一个选项，为通用的地面太赫兹成像应用。该相机目前以2 Hz的准视频帧速率工作，每帧的噪声等效温差为10.1 K，接近背景极限。152个元件的超导LEKID阵列是由一个简单的40纳米铝膜上的硅介质基板，并通过一个单一的微波馈线与低温低噪声放大器和室温频域多路复用电子读出。
We have developed a passive 350 GHz (850 μm) video-camera to demonstrate lumped element kinetic inductance detectors (LEKIDs)--designed originally for far-infrared astronomy--as an option for general purpose terrestrial terahertz imaging applications. The camera currently operates at a quasi-video frame rate of 2 Hz with a noise equivalent temperature difference per frame of ∼0.1 K, which is close to the background limit. The 152 element superconducting LEKID array is fabricated from a simple 40 nm aluminum film on a silicon dielectric substrate and is read out through a single microwave feedline with a cryogenic low noise amplifier and room temperature frequency domain multiplexing electronics.