---
res:
  bibo_abstract:
  - We realize and investigate a nonlinear metasurface taking advantage of intersubband
    transitions in ultranarrow GaN/AlN multi-quantum well heterostructures. Owing
    to huge band offsets, the structures offer resonant transitions in the telecom
    window around 1.55 µm. These heterostructures are functionalized with an array
    of plasmonic antennas featuring cross-polarized resonances at these near-infrared
    wavelengths and their second harmonic. This kind of nonlinear metasurface allows
    for substantial second-harmonic generation at normal incidence which is completely
    absent for an antenna array without the multi-quantum well structure underneath.
    While the second harmonic is originally radiated only into the plane of the quantum
    wells, a proper geometrical arrangement of the plasmonic elements permits the
    redirection of the second-harmonic light to free-space radiation, which is emitted
    perpendicular to the surface.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Jan
      foaf_name: Mundry, Jan
      foaf_surname: Mundry
  - foaf_Person:
      foaf_givenName: Florian
      foaf_name: Spreyer, Florian
      foaf_surname: Spreyer
  - foaf_Person:
      foaf_givenName: Valentin
      foaf_name: Jmerik, Valentin
      foaf_surname: Jmerik
  - foaf_Person:
      foaf_givenName: Sergey
      foaf_name: Ivanov, Sergey
      foaf_surname: Ivanov
  - foaf_Person:
      foaf_givenName: Thomas
      foaf_name: Zentgraf, Thomas
      foaf_surname: Zentgraf
      foaf_workInfoHomepage: http://www.librecat.org/personId=30525
    orcid: 0000-0002-8662-1101
  - foaf_Person:
      foaf_givenName: Markus
      foaf_name: Betz, Markus
      foaf_surname: Betz
  bibo_doi: 10.1364/ome.426236
  bibo_issue: '7'
  bibo_volume: 11
  dct_date: 2021^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2159-3930
  dct_language: eng
  dct_publisher: OSA@
  dct_title: Nonlinear metasurface combining telecom-range intersubband transitions
    in GaN/AlN quantum wells with resonant plasmonic antenna arrays@
...