Abstract
Surface plasmon polariton (SPP) can break though the traditional optical diffraction limit, and thus provides an important platform for the design of various nanophotonic devices. However, it is still a big challenge to achieve manipulation of SPP in both spatially nanoscale and temporally ultrafast conditions. Here, we propose a method of spatiotemporal manipulation of femtosecond SPP pulses, and achieve the functions including dynamically controlled wavefront rotation and redirection of SPP propagation. This work has great potential in applications such as ultrafast on-chip photonic information processing, ultrafast beam shaping and attosecond pulse generation.
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