Optimization of self-mixing modulation in VCSELs for sensing applications

David Larsson, Kresten Yvind, Jørn Märcher Hvam

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    Abstract

    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
    PublisherIEEE
    Publication date2009
    ISBN (Print)978-1-4244-4079-5
    DOIs
    Publication statusPublished - 2009
    EventEuropean Conference on Lasers and Electro-Optics - European Quantum Electronics Conference 2009 - Munich, Germany
    Duration: 14 Jun 200919 Jun 2009
    http://2009.cleoeurope.org/
    http://2009.cleoeurope.org/

    Conference

    ConferenceEuropean Conference on Lasers and Electro-Optics - European Quantum Electronics Conference 2009
    Country/TerritoryGermany
    CityMunich
    Period14/06/200919/06/2009
    Internet address

    Bibliographical note

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