Enhanced Five-Photon Photoluminescence in Subwavelength AlGaAs Resonators

Anastasiia Zalogina, Pavel Tonkaev, Aditya Tripathi, Hoo Cheol Lee, Luca Carletti, Hong Gyu Park, Sergey S. Kruk, Yuri Kivshar

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Multiphoton processes of absorption photoluminescence have enabled a wide range of applications including three-dimensional microfabrication, data storage, and biological imaging. While the applications of two-photon and three-photon absorption and luminescence have matured considerably, higher-order photoluminescence processes remain more challenging to study due to their lower efficiency, particularly in subwavelength systems. Here, we report the observation of five-photon luminescence from a single subwavelength nanoantenna at room temperature enabled by the Mie resonances. We excite an AlGaAs resonator at around 3.6 μm and observe photoluminescence at around 740 nm. We show that the interplay of the Mie multipolar modes at the subwavelength scale can enhance the efficiency of the five-photon luminescence by at least 4 orders of magnitude, being limited only by sensitivity of our detector. Our work paves the way toward applications of higher-order multiphoton processes at the subwavelength scales enabled by the physics of Mie resonances.

Original languageEnglish
Pages (from-to)4200-4206
Number of pages7
JournalNano Letters
Volume22
Issue number10
DOIs
Publication statusPublished - 2022 May 25

Keywords

  • Mie resonances
  • multiphoton photoluminescence
  • Nanoresonators
  • subwavelength photonics

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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