We show that the nonlinear or blue-induced IR absorption in KNbO/sub 3/ leads to a significant temperature rise in the femtosecond experiments, which must be accounted for in setting the phase-matching conditions. We investigate, for the first time to our knowledge, the focusing dependence of the phase-matching temperature. We find that the optimum phase-matching temperature significantly depends not only on the input power but also on the focusing.


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    Title :

    Focusing effects on blue generation by frequency doubling of femtosecond pulses in KNbO/sub 3/


    Contributors:
    Sungkyu Yu, (author) / Weiner, A.M. (author)


    Publication date :

    1999-01-01


    Size :

    180163 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English