Nanoscopic Imaging of Photonic Modes Excited in Square-Shaped Perylene Microcrystals

Keisuke Imaeda, Kohei Imura*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Organic microcrystals have attracted much attention because of their light confinement and transport capability on the micrometer scale. The capability is closely related to the photonic modes resonantly excited in the organic microcrystal, and therefore, visualization of photonic modes is important not only for a deeper understanding of organic microcrystals but also for their practical application. Here, we directly visualized the photonic modes excited in square-shaped perylene microcrystals by using a scanning near-field optical microscope. From the near-field optical images and the electromagnetic simulations, we demonstrate that the Fabry-Pérot modes are predominantly excited compared with the whispering gallery modes in two-dimensional organic microcrystals. The findings provide a deeper understanding of the photonic modes and should be beneficial for the design of microscale waveguides and photonic integrated circuits.

Original languageEnglish
Pages (from-to)4665-4671
Number of pages7
JournalJournal of Physical Chemistry C
Volume127
Issue number9
DOIs
Publication statusPublished - 2023 Mar 9

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Energy
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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