Summary form only given. The purpose of this study is to distinguish between non-thermal and thermal processes that lead to laser ablation of wide band-gap dielectrics (in our case sapphire) under ultrashort (sub-ps and ps) infrared laser pulse irradiation. Two ablation phases, a gentle-etch phase and a strong-etch phase, have been distinguished in the process of laser sputtering as a function of pulse duration, laser fluence and number of pulses, which are regarded as the key parameters that govern the laser-induced ablation process. We focus our attention on the non-thermal processes directly related to particle emission, as a consequence of the electronic processes that initiate and mediate the laser interaction.


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    Title :

    Non-thermal and thermal processes in the ultra-short laser ablation of sapphire


    Contributors:
    Stoian, R. (author) / Lorenz, M. (author) / Ashkenasi, D. (author) / Rosenfeld, A. (author) / Campbell, E.E.B. (author)


    Publication date :

    1999-01-01


    Size :

    270986 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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