期刊
LASER & PHOTONICS REVIEWS
卷 7, 期 6, 页码 1043-1048出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201300087
关键词
Imaging; metamaterial; resonant; sensor; terahertz
资金
- Engineering and Physical Sciences Research Council [EP/I017461/1, EP/J018678/1]
- Engineering and Physical Sciences Research Council [EP/D501288/1, EP/J018678/1, EP/I017461/1] Funding Source: researchfish
- EPSRC [EP/I017461/1, EP/D501288/1, EP/J018678/1] Funding Source: UKRI
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.
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