Summary form only given. We report on the improved performance of InGaAs MQW vertical cavity (VCSEL) lasers with tapered oxide apertures positioned 50nm from the quantum wells. A vertical cavity laser with 2 /spl mu/m opening has a threshold of 145 /spl mu/A and an external differential efficiency of 55%. The good slope efficiency combined with low-threshold is made possible by reduced current spreading and low optical scattering losses.


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    Title :

    Low-threshold, efficient vertical cavity lasers with tapered apertures


    Contributors:


    Publication date :

    1998-01-01


    Size :

    170734 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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