Mode control of random microresonators consisting of scattering particles

S. Takeda, S. Hamada, M. Terakawa, T. Saiki, M. Obara

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    We report on the tuneabilities of Anderson localized light in random scattering systems and its lasing characteristics. By use of FDTD method, we investigated the impulse response of two-dimensional scattering systems consisting of closely packed dielectric particles, and analyzed the localized modes. We revealed the frequencies of the localized modes to be capable of being tuned by changing the structural parameters of the system: diameter, filling factor, and refractive index of the particles. It was also found to be able to tune the Q (quality) factors of the localized modes by changing the system size of the entire medium. Furthermore, by combining Maxwell's equations with rate equations for electron's system, we also theoretically demonstrate how the localized area serves as a laser "resonator" and random lasing is induced.

    Original languageEnglish
    Title of host publicationXVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
    DOIs
    Publication statusPublished - 2010 Dec 1
    Event18th International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers - Sofia, Bulgaria
    Duration: 2010 Aug 302010 Sep 3

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume7751
    ISSN (Print)0277-786X

    Other

    Other18th International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
    CountryBulgaria
    CitySofia
    Period10/8/3010/9/3

    Keywords

    • Anderson localization
    • FDTD
    • random lasing, scattering

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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  • Cite this

    Takeda, S., Hamada, S., Terakawa, M., Saiki, T., & Obara, M. (2010). Mode control of random microresonators consisting of scattering particles. In XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers [77511A] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7751). https://doi.org/10.1117/12.880941