Energy efficiency of femtosecond laser ablation of polymer materials |
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| Authors: | E. Yu. Loktionov A. V. Ovchinnikov Yu. Yu. Protasov Yu. S. Protasov D. S. Sitnikov |
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| Affiliation: | 1.N. é. Bauman Moscow State Technical University,Moscow,Russia;2.Joint Institute of High Temperatures,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | We present the results of an experimental study of the ablation spectral energy thresholds for a number of polymer materials ((C2F4) n , (CH2O) n ) exposed to femtosecond (τ0.5 ~ 45–70 fs) laser pulses (λ ~ 266, 400, 800 nm) under atmospheric conditions and under vacuum (p ~ 10–2 Pa). We have analyzed the energy thresholds and the efficiency of optical, thermophysical, and gasdynamic processes in laser ablation vs. the laser pulse duration and photon energy. |
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