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Detecting mid-infrared light by molecular frequency upconversion in dual-wavelength nanoantennas.
Xomalis, Angelos; Zheng, Xuezhi; Chikkaraddy, Rohit; Koczor-Benda, Zsuzsanna; Miele, Ermanno; Rosta, Edina; Vandenbosch, Guy A E; Martínez, Alejandro; Baumberg, Jeremy J.
Afiliación
  • Xomalis A; NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK.
  • Zheng X; NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK.
  • Chikkaraddy R; Department of Electrical Engineering (ESAT-TELEMIC), KU Leuven, Leuven, Belgium.
  • Koczor-Benda Z; NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK.
  • Miele E; Department of Physics and Astronomy, University College London, London, UK.
  • Rosta E; NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK.
  • Vandenbosch GAE; Department of Chemistry, University of Cambridge, Cambridge, UK.
  • Martínez A; The Faraday Institution, Harwell Science and Innovation Campus, Oxford, UK.
  • Baumberg JJ; Department of Physics and Astronomy, University College London, London, UK.
Science ; 374(6572): 1268-1271, 2021 Dec 03.
Article en En | MEDLINE | ID: mdl-34855505
Coherent interconversion of signals between optical and mechanical domains is enabled by optomechanical interactions. Extreme light-matter coupling produced by confining light to nanoscale mode volumes can then access single mid-infrared (MIR) photon sensitivity. Here, we used the infrared absorption and Raman activity of molecular vibrations in plasmonic nanocavities to demonstrate frequency upconversion. We converted approximately 10-micrometer-wavelength incoming light to visible light by surface-enhanced Raman scattering (SERS) in doubly resonant antennas that enhanced upconversion by more than 1010. We showed 140% amplification of the SERS anti-Stokes emission when an MIR pump was tuned to a molecular vibrational frequency, obtaining lowest detectable powers of 1 to 10 microwatts per square micrometer at room temperature. These results have potential for low-cost and large-scale infrared detectors and spectroscopic techniques.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos