Probing the strength of light-matter interaction in semiconductor microcavities by using resonant-mode shifts in temperature-dependent photoluminescence spectra

Sheng Chan Wu, Chung Xian Yang, Jer Shing Huang, Yia Chung Chang, Ching Hang Chien, Hsu Cheng Hsu

Research output: Contribution to journalArticlepeer-review

Abstract

The Rabi-splitting energy represents the strength of light-matter interaction. This quantity is a good benchmark for evaluating the performance of light-modulation devices. Herein, we adopt ZnO microrods as microcavities for whispering gallery modes and propose a convenient method for estimating the light-matter coupling strength based on the shifts of resonant modes in temperature-dependent photoluminescence spectra from 295 to 77 K. Both temperature-dependent index dispersion and Rabi splitting can be extracted. Additionally, the Rabi-splitting energy of bulk ZnO at 0 K is estimated to be about 289 meV.

Original languageEnglish
Article number081102
JournalAPL Materials
Volume11
Issue number8
DOIs
Publication statusPublished - 2023 Aug 1

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • General Engineering

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