Theory for heating of metals assisted by Surface Plasmon Polaritons
Autor: | Baerbel Rethfeld, P.N. Terekhin, O. Benhayoun, Martin E. Garcia, D. S. Ivanov |
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Rok vydání: | 2021 |
Předmět: |
Free electron model
Materials science Field (physics) General Physics and Astronomy Physics::Optics FOS: Physical sciences 02 engineering and technology Electron Applied Physics (physics.app-ph) 010402 general chemistry 01 natural sciences Molecular physics law.invention law Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Plasmon Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Materials Science (cond-mat.mtrl-sci) Physics - Applied Physics Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Laser Surface plasmon polariton Physics - Plasma Physics 0104 chemical sciences Surfaces Coatings and Films Plasma Physics (physics.plasm-ph) Lattice (module) Excited state 0210 nano-technology |
DOI: | 10.48550/arxiv.2103.05044 |
Popis: | We propose a model accounting for plasmons within a two temperature description, to investigate the role of surface plasmon polaritons (SPP) in the energy redistribution between laser excited electrons and the lattice, leading to surface restructuring of the material. This energy transfer can lead to the creation of laser induced surface structures in metals illuminated by an ultrashort laser pulse. The Two Temperature Model + Plasmon (TTM+P) equations are constructed by applying perturbation theory on the energy-, momentum- and density conservation equations of free electrons in metals. We consider three subsystems: the lattice, the thermalized electrons and the SPP, subject to an external laser field irradiation. The interference between the laser and SPP fields leads to spatially modulated energy absorption by the electronic system, and, through electron-phonon collisions, periodically shapes the lattice temperature. A numerical analysis is performed on a 1D model for gold. We show the emergence of a periodic modulation of the lattice temperature, which may contribute to laser induced periodic surface structures (LIPSS). Comment: 23 pages, 5 figures |
Databáze: | OpenAIRE |
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