Gain coefficient involving excitonic transitions is calculated for unstrained as well as strained ZnCdSe/ZnMgSSe multiple quantum well (MQW) lasers as a function of operating wavelength and current density. This paper models the behavior of radiative recombination involving excitons as well as free carriers in strained layer blue-green quantum well lasers, and predicts for the first time a low threshold operation in tensile strained active layers. For example, the tensile strained Zn/sub .8/Cd/sub .2/Se-ZnMgSSe quantum well lasers are shown to operate at threshold current density as low as 180 A/cm/sup 2/, which is about the half of the compressive strain case.


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    Title :

    Prediction of lower current threshold in tensile strained ZnCdSe/ZnMgSSe multiple quantum well blue-green lasers


    Contributors:
    Huang, W. (author) / Jain, F.C. (author)

    Published in:

    Proceedings of LEOS'94 ; 1 ; 341-342 vol.1


    Publication date :

    1994-01-01


    Size :

    122390 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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