Sum-frequency mixing in a nonlinear waveguide using counter-propagating light beams was first demonstrated more than a decade ago. The subsequent development of quasi-phase matching (QPM) techniques in Al/sub x/Ga/sub 1-x/As heterostructure waveguides has improved the conversion efficiencies such that a variety of applications based on second-harmonic (SH) generation are now feasible. Difference-frequency mixing in an Al/sub x/Ga/sub 1-x/As waveguides can also be used to generate tunable CW microwave radiation. The optimization of devices based on QPM SH generation requires the capability to spatially modulate the second-order nonlinearity /spl chi//sup (2)/. Within the Al/sub x/Ga/sub 1-x/As material system, a number of approaches to controlling /spl chi//sup (2)/ have been explored. The simplest approach is to vary the concentration. Once appropriate materials have been found, the geometry of the heterostructure must be designed to optimize device operation.


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    Title :

    Sum and difference frequency mixing in semiconductor heterostructures


    Contributors:
    Janz, S. (author) / Dai, H. (author) / Frlan, E. (author) / Letourneau, S. (author) / Chatenoud, F. (author) / Delage, A. (author) / Beaulieu, Y. (author) / van der Meer, P. (author) / Normandin, R. (author)

    Published in:

    Proceedings of LEOS'94 ; 2 ; 328-329 vol.2


    Publication date :

    1994-01-01


    Size :

    173655 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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