2022
DOI: 10.1016/j.optmat.2022.112203
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Femtosecond-laser processing incubation in Diamond-like carbon

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Cited by 9 publications
(1 citation statement)
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“…The very low GL thickness (<10 nm) together with low ablation rates of 5-16 nm/pulse (which are much smaller than the optical absorption length 1/α ~100 nm in the GL at λ = 1030 nm) are indicative of nonlinear absorption of IR fs-laser pulses in the surface layer followed by specific thermo-mechanical ablation process when the heated nm-thick layers are removed from the surface by spallation. (α ≈ 10 5 cm −1 is the absorption coefficient of GC [36]; data on the two-photon absorption coefficient of DLC are lacking in the literature [37]). Indeed, our previous data of numerical simulations of the temperature and surface graphitization in a 2.5-µm-thick DLN film at linear absorption and similar fluence evidenced the heat-diffusion-assisted growth of the graphitized layer under the actions of successive IR fs-laser pulses [17], very different from the results presented in this work.…”
Section: Resultsmentioning
confidence: 99%
“…The very low GL thickness (<10 nm) together with low ablation rates of 5-16 nm/pulse (which are much smaller than the optical absorption length 1/α ~100 nm in the GL at λ = 1030 nm) are indicative of nonlinear absorption of IR fs-laser pulses in the surface layer followed by specific thermo-mechanical ablation process when the heated nm-thick layers are removed from the surface by spallation. (α ≈ 10 5 cm −1 is the absorption coefficient of GC [36]; data on the two-photon absorption coefficient of DLC are lacking in the literature [37]). Indeed, our previous data of numerical simulations of the temperature and surface graphitization in a 2.5-µm-thick DLN film at linear absorption and similar fluence evidenced the heat-diffusion-assisted growth of the graphitized layer under the actions of successive IR fs-laser pulses [17], very different from the results presented in this work.…”
Section: Resultsmentioning
confidence: 99%