Semiconductor nanowires for highly sensitive, room-temperature detection of terahertz quantum cascade laser emission (Articolo in rivista)

Type
Label
  • Semiconductor nanowires for highly sensitive, room-temperature detection of terahertz quantum cascade laser emission (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.4724309 (literal)
Alternative label
  • Vitiello, Miriam S.; Viti, Leonardo; Romeo, Lorenzo; Ercolani, Daniele; Scalari, G.; Faist, J.; Beltram, F.; Sorba, L.; Tredicucci, A. (2012)
    Semiconductor nanowires for highly sensitive, room-temperature detection of terahertz quantum cascade laser emission
    in Applied physics letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Vitiello, Miriam S.; Viti, Leonardo; Romeo, Lorenzo; Ercolani, Daniele; Scalari, G.; Faist, J.; Beltram, F.; Sorba, L.; Tredicucci, A. (literal)
Pagina inizio
  • 241101 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 100 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 24 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Ist Nanosci CNR, NEST, I-56127 Pisa, Italy Scuola Normale Super Pisa, I-56127 Pisa, Italy ETH Honggerberg, Inst Quantum Elect, Zurich Phys Dept, CH-8093 Zurich, Switzerland (literal)
Titolo
  • Semiconductor nanowires for highly sensitive, room-temperature detection of terahertz quantum cascade laser emission (literal)
Abstract
  • We report on the development of nanowire-based field-effect transistors operating as high sensitivity terahertz (THz) detectors. By feeding the 1.5 THz radiation field of a quantum cascade laser (QCL) at the gate-source electrodes with a wide band dipole antenna, we record a photovoltage signal corresponding to responsivity values >10 V/W, with impressive noise equivalent power levels <6 x 10(-11) W/root Hz at room temperature and a wide modulation bandwidth. The potential scalability to even higher frequencies and the technological feasibility of realizing multi-pixel arrays coupled with QCL sources make the proposed technology highly competitive for a future generation of THz detection systems. (literal)
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