Abstract
We present a microscopic description of the excitation of coherent phonons as a response to femtosecond laser excitation. Using molecular dynamics simulations based on a tight-binding electronic Hamiltonian we discuss two examples of laser-induced coherent phonons: (1) excitation of the E2g1 phonon mode in graphite under high external pressure and (2) the displacive excitation of two perpendicular phonon modes in carbon nanotubes. We discuss the influence of these coherent phonons on the ablation mechanisms.
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Garcia, M., Dumitrică, T. & Jeschke, H. Laser-induced coherent phonons in graphite and carbon nanotubes: model and simulations. Appl. Phys. A 79, 855–857 (2004). https://doi.org/10.1007/s00339-004-2690-2
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DOI: https://doi.org/10.1007/s00339-004-2690-2