Optimization of self-mixing modulation in VCSELs for sensing applications

David Larsson, Kresten Yvind, Jørn Märcher Hvam

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    This paper numerically investigates, SMI in an oxide aperture VCSEL to optimize the epitaxial structure for higher performance. The standard investigated structure is emitting light at 970 nm from In0.17Ga0.83As-GaAsP QWs sandwiched between 36 pairs of bottom mirror and 23 pairs of top mirror (AlxGa1-xAs). The calculations are based on matrix multiplication for calculating effective reflectivity and transmission with external feedback, combined with a logarithmic gain model and standard laser rate equations. To improve the sensitivity towards self-mixing interference in VCSELs by simple epitaxial means and this should enable us to e.g. measure smaller bending deflections of cantilever sensors
    Original languageEnglish
    Title of host publicationCLEO/Europe-EQEC 2009
    Place of PublicationMunich, Germany
    Publication date2009
    ISBN (Print)978-1-4244-4079-5
    Publication statusPublished - 2009
    EventEuropean Conference on Lasers and Electro-Optics - European Quantum Electronics Conference 2009 - Munich, Germany
    Duration: 14 Jun 200919 Jun 2009


    ConferenceEuropean Conference on Lasers and Electro-Optics - European Quantum Electronics Conference 2009
    Internet address

    Bibliographical note

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