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Thermal energy coupling to Al in ablation with ms-, ns-, and fs-laser pulses
2004 / IEEE / 0-7803-8429-6
This item was taken from the IEEE Conference ' Thermal energy coupling to Al in ablation with ms-, ns-, and fs-laser pulses ' Residual energy coefficient defined as the ratio of thermal energy retained in aluminum sample following laser ablation to the energy of incident laser radiation as a function of laser fluence was studied. Experiments were performed in various gas media with the use of ms-and ns-ruby, ns-Nd:glass, and fs-Ti:sapphire lasers. For ns- and fs-laser pulses an abrupt significant rise of residual energy coefficient of aluminum occurs above the ablation threshold in a gas medium and does not occur in vacuum. For ms-laser pulses the residual energy coefficient increases slightly both in air and vacuum in the range of laser fluences above the ablation threshold.
Al/sub 2/o/sub 3/:ti
Thermal Energy Coupling
Residual Energy Coefficient
Incident Laser Radiation
Elementary Particle Vacuum
Optical Pulse Generation
High-speed Optical Techniques