Nanobolometer with ultralow noise equivalent power

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • VTT Tech Res Ctr Finland Ltd, VTT Technical Research Center Finland, QTF Ctr Excellence
  • NIST, National Institute of Standards & Technology (NIST) - USA
  • CALTECH, California Institute of Technology, Dept Appl Phys
  • VTT Technical Research Centre of Finland

Kuvaus

Since the introduction of bolometers more than a century ago, they have been used in various applications ranging from chemical sensors, consumer electronics, and security to particle physics and astronomy. However, faster bolometers with lower noise are of great interest from the fundamental point of view and to find new use-cases for this versatile concept. We demonstrate a nanobolometer that exhibits roughly an order of magnitude lower noise equivalent power, 20zW/root Hzp, than previously reported for any bolometer. Importantly, it is more than an order of magnitude faster than other low-noise bolometers, with a time constant of 30 mu s at 60zW/root Hzp. These results suggest a calorimetric energy resolution of 0.3 zJ = h x 0.4 THz with a time constant of 30 mu s. Further development of this nanobolometer may render it a promising candidate for future applications requiring extremely low noise and high speed such as those in quantum technology and terahertz photon counting.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli124
Sivumäärä8
JulkaisuCommunications physics
Vuosikerta2
TilaJulkaistu - 11 lokakuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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