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Creation Of Micro/Nano Surface Structures On Silver Using Collinear Double Femtosecond Laser Pulses With Different Pulse Separation, Nicholas Roth, Craig Zuhlke, Edwin Peng, Scott Hansen, Jeffrey E. Shield, Dennis Alexander

University of Nebraska's National Strategic Research Institute: Publications

Self-organized mound-like micro/nanoscale structures are reported for the first time on silver using a dual-pulse femtosecond laser surface processing technique. The dual-pulse laser processing technique reported in this paper uses femtosecond laser pulse pairs with a controlled temporal delay between the leading and trailing pulses. Using dual pulses at higher fluence values,mound-likemicro/nanostructures have been created on silver samples for the first time. Formation of the self-organized microstructures is shown to be dependent on the time delay between the leading and trailing pulses. Mound-likemicrostructures do not develop on silver for overlapped pulses or using single-pulse femtosecond laser surface processing for the …