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Description:

Ultrafast and sensitive (noise equivalent power < 1 nWHz-1/2) light-detection in the Terahertz (THz) frequency range (0.1-10 THz) and room-temperature (RT) is key for applications such as time-resolved THz spectroscopy of gases, complex molecules, and cold samples, imaging, metrology, ultra-high-speed data communications, for capturing snapshots of ultrafast dynamics at the nanoscale, coherent control of quantum systems or quantum optics. Here, we report RT THz nano-receivers exploiting antenna-coupled graphene field effect transistors integrated with lithographically-patterned high-bandwidth (~100 GHz) chips, operating with a combination of high speed (hundreds ps response time) and high sensitivity (noise equivalent power ~120 pWHz-1/2). Remarkably, this can be achieved with various antenna and transistor architectures (single gate, dual gate) for any frequency in the 0.1-10 THz range, thus paving the way for the design of ultrafast graphene arrays in the far infrared, opening concrete perspective for targeting the aforementioned applications.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Light-detection, terahertz frequency, graphene field effect transistors

Date published: 2020-12-04

Publisher: Walter de Gruyter GmbH

Journal:

• Nanophotonics vol. 10 issue. 1 p. 89-98

Funding:

• H2020 European Research Council SPRINT/681379
• EU Graphene Flagship
• Hetero2D EP/L016087/1
• GSYNCOR EP/K01711X/1
• EPSRC EP/K017144/1

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1515/nanoph-2020-0255

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Updated at: 2025-02-26 16:30:08 +0900

Published on MDR: 2025-02-26 16:30:09 +0900