We studied the laser ablation dynamics of steel in the thermal regime both experimentally and theoretically. The real-time monitoring of the process shows that the ablation rate depends on laser energy density and ambient pressure during the exposure time. We demonstrated that the ablation efficiency can be enhanced when the pressure is reduced with respect to the atmospheric pressure for a given laser fluence, reaching an upper limit despite of high-vacuum conditions. An analytical model based on the Hertz-Knudsen law reproduces all the experimental results. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4732507]
Laser ablation dynamics in metals: The thermal regime / Mezzapesa, F. P.; Columbo, L. L.; Brambilla, M.; Dabbicco, M.; Ancona, A.; Sibillano, T.; Scamarcio, G.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 101:1(2012). [10.1063/1.4732507]
Laser ablation dynamics in metals: The thermal regime
Brambilla, M.;
2012-01-01
Abstract
We studied the laser ablation dynamics of steel in the thermal regime both experimentally and theoretically. The real-time monitoring of the process shows that the ablation rate depends on laser energy density and ambient pressure during the exposure time. We demonstrated that the ablation efficiency can be enhanced when the pressure is reduced with respect to the atmospheric pressure for a given laser fluence, reaching an upper limit despite of high-vacuum conditions. An analytical model based on the Hertz-Knudsen law reproduces all the experimental results. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4732507]I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
