STP1028: The Mechanism of Prebreakdown Nonlinear Energy Deposition From Intense Photon Fields at 532 nm in NaCl

    Jones, SC
    Washington State University, Pullman, WA

    Shen, XA
    Washington State University, Pullman, WA

    Braunlich, PF
    Washington State University, Pullman, WA

    Kelly, P
    Washington State University, Pullman, WA

    Epifanov, AS
    Washington State University, Pullman, WA

    Pages: 13    Published: Jan 1988


    Abstract

    We present direct experimental evidence that significant amounts of energy can be deposited in NaCl by short laser pulses of 532 nm wavelength without electron avalanche formation. The mechanism is four-photon free carrier generation and free carrier absorption with contributions by self-trapped holes. We also report the first reliable measurements of four-photon absorption cross sections in any wide-gap ionic solid.

    Keywords:

    alkali halide, avalanche ionization, four-photon absorption, free electron heating, polaron heating, prebreakdown absorption, primary defects, purity, self-focusing


    Paper ID: STP18600S

    Committee/Subcommittee: F01.10

    DOI: 10.1520/STP18600S


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