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 number: 19

    Conference

    ConferenceNovel In-Plane Semiconductor Lasers XIX 2020
    Number19
    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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