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Updated: Apr 21, 2026

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
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Rayleigh scattering in coupled microcavities: theory.

Zoltán Vörös, Gregor Weihs

    Journal of Physics. Condensed Matter : an Institute of Physics Journal
    |November 13, 2014
    PubMed
    Summary

    Structural disorder in semiconductor heterostructures enables symmetry-forbidden scattering events. This study rules out effective filter theories for Rayleigh scattering in microcavity structures.

    Area of Science:

    • Solid State Physics
    • Materials Science
    • Quantum Mechanics

    Background:

    • Coupled semiconductor heterostructures are crucial for optoelectronic devices.
    • Symmetry rules often dictate allowed optical transitions and scattering processes.
    • Structural disorder can break these symmetries, leading to novel phenomena.

    Purpose of the Study:

    • To theoretically investigate the impact of structural disorder on single-particle scattering in coupled semiconductor heterostructures.
    • To extend existing models for Rayleigh scattering to coupled planar microcavity structures.
    • To evaluate the validity of effective filter theories in this context.

    Main Methods:

    • Theoretical modeling based on an extension of Savona's (2007) model.
    • Analysis of single-particle scattering events influenced by structural disorder.

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  • Application to coupled planar microcavity systems.

    • Main Results:

    • Structural disorder facilitates single-particle scattering events that are symmetry-forbidden.
    • The extended model provides a framework for describing Rayleigh scattering in these structures.
    • Effective filter theories were found to be inadequate for explaining the observed scattering phenomena.

    Conclusions:

    • Structural disorder plays a significant role in enabling otherwise forbidden scattering pathways in semiconductor heterostructures.
    • The developed theoretical approach offers new insights into light-matter interactions in microcavity systems.
    • Results challenge the applicability of simplified filter theories, necessitating more comprehensive models.