The change of thermal properties under the exposure to fs-laser pulses

Bernd Huettner

doi:10.1117/12.548147

20 September 2004 The change of thermal properties under the exposure to fs-laser pulses

Bernd Huettner

Proceedings Volume 5448, High-Power Laser Ablation V; (2004) https://doi.org/10.1117/12.548147
Event: High-Power Laser Ablation, 2004, Taos, New Mexico, United States

Abstract

We start with a short introduction of some newer thermodynamical approaches to the description of nonequilibrium processes related to the interaction of short laser pulses with matter. Then we shall use the example of electronic thermal conductivity to show why the equations usually derived in standard solid state theory have to be reconsidered. This is mandated by the loss of local thermal equilibrium, the nonstationarity, and the enhanced contribution from electron-electron scattering. Based on Boltzmann’s equation we derive an expression for the thermal conductivity with new qualitative and quantitative properties. These results are supported by comparison with experiments.

Citation Download Citation

Bernd Huettner "The change of thermal properties under the exposure to fs-laser pulses", Proc. SPIE 5448, High-Power Laser Ablation V, (20 September 2004); https://doi.org/10.1117/12.548147

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