It has recently been found that the coexistence of the two counterpropagating modes in the laser cavity may affect the optical stability and lead to a large variety of operating regimes. In this work we report on the ring cavity mode behaviour in ridge-waveguide semiconductor lasers fabricated on GaAs/AlGaAs and InGaAs/InGaAsP material systems. Investigation on the unidirectional operating regime has shown a drastic improvement in the device performance and frequency stability with respect to bidirectional operation. In addition, we found that a semiconductor ring laser (SRL) operating in the unidirectional regime behaves as an optical bistable device between the two counterpropagating modes.


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    Title :

    Operating regimes and optical bistability in InGaAs/InGaAsP and GaAs/AlGaAs ring lasers


    Contributors:
    Sorel, M. (author) / Laybourn, P.J.R. (author) / Giuliani, G. (author) / Donati, S. (author) / Scire, A. (author)


    Publication date :

    2003-01-01


    Size :

    80930 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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