Resonance condition and field distribution in line-defect photonic crystal cavities

Marco Saldutti*, Jesper Mørk, Mariangela Gioannini

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

By applying a recently proposed coupled-Bloch-mode approach, we have derived the resonance condition for the longitudinal modes of passive photonic crystal (PhC) line-defect cavities. We have derived simple expressions for the electric field depending on the size of the cavity and the order of the resonant mode. We have shown that, as the cavity becomes longer, the fundamental mode turns from FP-like to DFB-like and the fraction of its wavevector components within the light cone is gradually suppressed. Importantly, we have clarified the physical origin for this behaviour.

Original languageEnglish
Title of host publicationProceedings of SPIE
EditorsAlexey A. Belyanin, Peter M. Smowton
Number of pages9
Volume11301
PublisherSPIE - International Society for Optical Engineering
Publication date1 Jan 2020
Article number113010W
ISBN (Electronic)9781510633650
DOIs
Publication statusPublished - 1 Jan 2020
EventNovel In-Plane Semiconductor Lasers XIX 2020 - San Francisco, United States
Duration: 3 Feb 20206 Feb 2020

Conference

ConferenceNovel In-Plane Semiconductor Lasers XIX 2020
Country/TerritoryUnited States
CitySan Francisco
Period03/02/202006/02/2020
SponsorSPIE
SeriesProceedings of SPIE - The International Society for Optical Engineering
Volume11301
ISSN0277-786X

Keywords

  • Bloch modes
  • Coupled-mode theory
  • DFB-like
  • FP-like
  • Photonic crystal (PhC)
  • Photonic crystal cavities
  • Q-factor
  • Radiation loss

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