Laser Pulse Heating of Spherical Metal Particles

Michael I. Tribelsky*, Andrey E. Miroshnichenko, Yuri S. Kivshar, Boris S. Luk'yanchuk, Alexei R. Khokhlov

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    45 Citations (Scopus)

    Abstract

    We consider the general problem of laser pulse heating of spherical metal particles with the sizes ranging from nanometers to millimeters.We employ the exact Mie solution of the diffraction problem and solve the heat-transfer equation to determine the maximum temperature rise at the particle surface as a function of optical and thermometric parameters of the problem. Primary attention is paid to the case when the thermal diffusivity of the particle is much larger than that of the environment, as it is in the case of metal particles in fluids.We show that, in this case, for any given duration of the laser pulse, the maximum temperature rise as a function of the particle size reaches a maximum at a certain finite size of the particle. We suggest simple approximate analytical expressions for this dependence, which cover the entire parameter range of the problem and agree well with direct numerical simulations.

    Original languageEnglish
    Article number021024
    Pages (from-to)1-9
    Number of pages9
    JournalPhysical Review X
    Volume1
    Issue number2
    DOIs
    Publication statusPublished - 2011

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