We demonstrate uni-directional emission near 400 nm from lasing InGaN/InGaN multiple quantum-well (MQW) spiral micropillars. Reduction of the lasing threshold (to current densities as low as 4.6 kA/cm/sup 2/ when current-injected) and enhancement of uni-directionality occurs when the microcavity is selectively optically or electrically pumped near its boundary.


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    Title :

    Uni-directionally blue emitting spiral-shaped micropillar laser diode


    Contributors:
    Chern, G.D. (author) / Tureci, H.E. (author) / Stone, A.D. (author) / Chang, R.K. (author) / Kneissl, M. (author) / Johnson, N.M. (author)


    Publication date :

    2004-01-01


    Size :

    157258 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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