Photoluminescence enhancement with all-dielectric coherent metasurfaces

Yu Tsung Lin, Amir Hassanfiroozi, Wei Rou Jiang, Mei Yi Liao, Wen Jen Lee, Pin Chieh Wu

研究成果: Article同行評審

18 引文 斯高帕斯(Scopus)

摘要

Mie resonances have recently attracted much attention in research on dielectric metasurfaces, owning to their enriched multipole resonances, negligible optical loss, and efficient light emitter integration. Although there is a rapid advancement in this field, some fundamental developments are still required to provide a simpler and more versatile paradigm for photoluminescence (PL) control. In this work, we proposed that an all-dielectric coherent metasurface can engineer the PL response by tuning the array size. Such PL manipulation is attributed to the collective Mie resonances that mediate the inter-unit interactions between unit elements and alter the PL intensity. Metasurfaces with different chip sizes are utilized to explore the array size effect on the collective Mie resonances, field enhancement, and Q-factor in TiO2 metasurfaces. Incorporating the all-dielectric coherent metasurface with fluorescent photon emitters, we performed the dependence of PL enhancement on array size, which achieves an enhancement factor of ∼10 at the central area of a 90 × 90 μm2 TiO2 metasurface array. These findings provide an additional degree of freedom to engineer the near-field confinement and enhancement, allowing one to manipulate incoherent photon emission and tune light-matter interaction at the nanoscale.

原文English
頁(從 - 到)2701-2709
頁數9
期刊Nanophotonics
11
發行號11
DOIs
出版狀態Published - 2022 6月 1

All Science Journal Classification (ASJC) codes

  • 生物技術
  • 電子、光磁材料
  • 原子與分子物理與光學
  • 電氣與電子工程

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