Optimization of the threshold pump power of a photonic crystal nanolaser, experiment and theory

K. S. Mathiesen*, T. S. Rasmussen, Y. Yu, A. Sakanas, E. Semenova, K. Yvind, J. Mørk

*Corresponding author for this work

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

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    Abstract

    Here we experimentally characterize photonic crystal nanolasers where the first endhole of the mirror has been systamatically shifted. FDTD simulations of similar passive cavities are done in order to find the expected evolution of the quality factor. We find that the predicted increase in the quality factor of the equivalent passive cavities leads to a decrease in the threshold power of the active nanolasers as expected. The maximum output power for varying endhole shifts has also been investigated and shifting the holes to optimize quality factor leads to lower maximum output power, when measuring from the top. The mirror of the photonic crystal cavity is further investigated as the mirror phase and penetration depth into the mirror are determined as a function of the endhole shift.

    Original languageEnglish
    Title of host publicationProceedings of SPIE
    EditorsPavel Cheben, Jiri Ctyroky, Inigo Molina-Fernandez
    Number of pages10
    Volume11031
    PublisherSPIE - International Society for Optical Engineering
    Publication date1 Jan 2019
    Article number110310G
    ISBN (Electronic)9781510627284
    DOIs
    Publication statusPublished - 1 Jan 2019
    EventSPIE Optics + Optoelectronics 2019 - Prague, Czech Republic
    Duration: 1 Apr 20194 Apr 2019

    Conference

    ConferenceSPIE Optics + Optoelectronics 2019
    Country/TerritoryCzech Republic
    CityPrague
    Period01/04/201904/04/2019
    SponsorSPIE
    SeriesProceedings of SPIE - The International Society for Optical Engineering
    Volume11031
    ISSN0277-786X

    Bibliographical note

    There is also a video of the presentation made at the conference available in the conference proceedings online: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11031/110310G/Optimization-of-the-threshold-pump-power-of-a-photonic-crystal/10.1117/12.2520896.full

    Keywords

    • Cavity mirror phase
    • FDTD
    • Lasers
    • Line defect lasers
    • Nanolasers
    • Optically pumped lasers
    • Photonic crystals
    • Quantum dot lasers

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