Abstract
As a promising approach to laser nanoprocessing, much interest has been focused on the self-organized, periodic surface nanostructures that are often observed in the femtosecond (fs) laser ablation experiment [1], while the ultrafast interaction poses a significant challenge to controlling the nanostructuring process and fabricating well-defined nanostructures. Here we demonstrate that surface plasmon polaritons (SPPs) [3] excited with fs laser pulses can generate periodically enhanced local fields to imprint a homogeneous nanograting on gallium nitride (GaN) surface in air.
© 2013 IEEE
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