High-performance room-temperature THz nanodetectors with a narrowband antenna (Articolo in rivista)

Type
Label
  • High-performance room-temperature THz nanodetectors with a narrowband antenna (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1117/12.2040529 (literal)
Alternative label
  • Viti, Leonardo; Coquillat, Dominique; Ercolani, Daniele; Knap, Wojciech; Sorba, Lucia; Vitiello, Miriam S. (2014)
    High-performance room-temperature THz nanodetectors with a narrowband antenna
    in Proceedings of SPIE, the International Society for Optical Engineering
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Viti, Leonardo; Coquillat, Dominique; Ercolani, Daniele; Knap, Wojciech; Sorba, Lucia; Vitiello, Miriam S. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 8985 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 10 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Consiglio Nazionale delle Ricerche (CNR) (literal)
Titolo
  • High-performance room-temperature THz nanodetectors with a narrowband antenna (literal)
Abstract
  • We report on the development of a novel class of nanowire-based THz detectors in which the field effect transistor (FET) is integrated in a narrow-band antenna. When the THz field is applied between the gate and the source terminals of the FET, a constant source-to-drain photovoltage appears as a result of the non-linear transfer characteristic of the transistor. In order to achieve attoFarad-order capacitance we fabricate lateral gate FET with gate widths smaller than 100 nm. Our devices show a maximum responsivity of 110 V/W without amplification, with noise equivalent power levels <= 1 nW/root Hz at room temperature. The 0.3 THz resonant antenna has bandwidth of similar to 10 GHz and opens a path to novel applications of our technology including metrology, spectroscopy, homeland security, biomedical and pharmaceutical applications. Moreover the possibility to extend this approach to relatively large multi-pixel arrays coupled with THz sources makes it highly appealing for a future generation of THz detectors. (literal)
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