Summary form only given. Shape deformation of a whispering gallery mode (WGM) microdisk laser was recently proposed and demonstrated to achieve high-power directional emission. Here, we demonstrate the first optically pumped, near-UV microdisk gallium nitride (GaN) laser. By using judicious pumping geometry, the lasing threshold was reduced to 60 kW/cm/sup 2/, which is an order of magnitude lower than previously reported for a conventional Fabry-Perot cavity structure. The pumping configuration is as important as the cavity structure in the design of low threshold lasers.


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    Title :

    GaN near-UV microdisk lasers: efficient pumping configuration and low lasing threshold


    Contributors:
    Rex, N.B. (author) / Chang, R.K. (author) / Gabel Chong, (author) / Guido, L.J. (author)


    Publication date :

    1999-01-01


    Size :

    267897 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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