A monolithic resonant terahertz sensor element comprising a metamaterial absorber and micro-bolometer
A monolithic resonant terahertz sensor element comprising a metamaterial absorber and micro-bolometer
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DOI：
10.1002/lpor.201300087
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发表时间：
2013-11-01
影响因子：
11
通讯作者：
Cumming, David R. S.
中科院分区：
文献类型：
--
作者：
Grant, James;Escorcia-Carranza, Ivonne;Cumming, David R. S.
在这篇文章中，单片谐振太赫兹传感器元件的噪声等效功率优于典型的商业室温单像素太赫兹探测器，并能够接近真实的时间读出率上级。该探测器是通过超材料吸收体和微测辐射热计传感器的集成而构建的。在2.5太赫兹的吸收幅度为57%，37 pW/根Hz的最小NEP和68 ms的热时间常数的传感器测量。作为探测器性能的证明，它被用于实际的Nipkow太赫兹成像系统中。通过添加标准读出和寻址电路，单片谐振太赫兹检测器容易缩放到焦平面阵列格式，从而实现紧凑、低成本的太赫兹成像。
In this article a monolithic resonant terahertz sensor element with a noise equivalent power superior to that of typical commercial room temperature single pixel terahertz detectors and capable of close to real time read-out rates is presented. The detector is constructed via the integration of a metamaterial absorber and a micro-bolometer sensor. An absorption magnitude of 57% at 2.5 THz, a minimum NEP of 37 pW/root Hz and a thermal time constant of 68 ms for the sensor are measured. As a demonstration of detector capability, it is employed in a practical Nipkow terahertz imaging system. The monolithic resonant terahertz detector is readily scaled to focal plane array formats by adding standard read-out and addressing circuitry enabling compact, low-cost terahertz imaging.