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Effect of Surface Structural Modifications on Absorptivity of Platinum in Multi-Pulse Femtosecond Laser Ablation
By: Vorobyev, A.Y.; Chunlei Guo;
2006 / IEEE / 1-4244-0233-6
This item was taken from the IEEE Conference ' Effect of Surface Structural Modifications on Absorptivity of Platinum in Multi-Pulse Femtosecond Laser Ablation ' Change in absorptivity of platinum caused by surface modifications in multi-pulse femtosecond laser ablation is studied as a function of the number of applied laser pulses at various values of laser fluence and ambient gas pressure. We show that laser-induced surface modifications enhance significantly the absorptivity due to nano.. micro.., macro-structures produced by ablation. At a sufficiently high fluence and large number of applied pulses the absorptance of ablated platinum surface can reach a value close to 100. The absorptivity enhancement caused by surface structural modifications produced by ablation in vacuum is greater then that in air.
Surface Structural Modifications
Multipulse Femtosecond Laser Ablation
Surface Emitting Lasers
Optical Surface Waves
High-speed Optical Techniques