STP799

    The Effect of the Treatment and Ageing on KC1 Surface Breakdown Threshold

    Published: Jan 1983


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    Abstract

    The breakdown thresholds of bare surfaces of KC1 windows treated in different ways were measured with a gain-switched-pulse CO2 laser at 10.6 μm. The studies indicated that grinding abrasive grain size and moisten-cooling liquid determine the destructed layer depth and the breakdown threshold for freshly polished KC1 surfaces. The ageing of these samples decreases breakdown thresholds considerably. The high-temperature baking of KC1 samples before final polishing increases the surface break-down threshold up to bulk damage for freshly polished and twice for aged samples as compared with those unbaked.

    Keywords:

    Alkali halides, TEA CO, 2, laser, KC1, laser damage, grinding grain size, destructed layer depth, baking, surface breakdown


    Author Information:

    Bilibin, SV
    Lebedev Physical Institute Academy of Sciences of the USSR,

    Egorov, VN
    Lebedev Physical Institute Academy of Sciences of the USSR,

    Katsnelson, AA
    Lebedev Physical Institute Academy of Sciences of the USSR,

    Kovalev, VI
    Lebedev Physical Institute Academy of Sciences of the USSR,

    Kolesova, NS
    Lebedev Physical Institute Academy of Sciences of the USSR,

    Sidorov, YS
    Lebedev Physical Institute Academy of Sciences of the USSR,

    Tkachenko, NL
    Lebedev Physical Institute Academy of Sciences of the USSR,

    Faizullov, FS
    Lebedev Physical Institute Academy of Sciences of the USSR,


    Paper ID: STP37248S

    Committee/Subcommittee: F01.02

    DOI: 10.1520/STP37248S


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