論文

2021年5月14日

Photoluminescence from an emitter layer sandwiched between the stack of metasurfaces

Journal of Applied Physics
  • Shunsuke Murai
  • ,
  • Kenichi Agata
  • ,
  • Katsuhisa Tanaka

129
18
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1063/5.0047352

The combination of metasurface with optical emitters provides a unique opportunity to control the emission. The metasurface effect strongly depends on the spectral overlap between the internal electronic transitions of the emitter and the optical resonances of the metasurface. Elaborate design of the metasurface could realize the resonances at both absorption and emission wavelengths of the emitter, but it usually leads to complexity in fabrication. In this work, we propose a very simple strategy to obtain the resonances at both wavelengths by sandwiching the emitter layer with a pair of metasurfaces designed for absorption and emission, respectively. For this purpose, we use a sticker of Al metasurface, which is the array of Al nanoparticles embedded in a flexible polymer film that can be stuck on any clean surfaces. The metasurface stack is prepared by simply placing the sticker, resonating at the emission wavelength, on the emitter layer deposited on the TiO 2 metasurface resonating at the absorption wavelength. The overall enhancement achieved for the stack of the metasurfaces can be understood roughly as the multiplication of contributions from the respective metasurfaces. Employing a sticker provides an easy-to-make way of constructing a stack of metasurfaces, which increases the degree of freedom in designing the metasurface-coupled emitters.

リンク情報
DOI
https://doi.org/10.1063/5.0047352
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85105886136&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85105886136&origin=inward
ID情報
  • DOI : 10.1063/5.0047352
  • ISSN : 0021-8979
  • eISSN : 1089-7550
  • SCOPUS ID : 85105886136

エクスポート
BibTeX RIS