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Dynamics of Decelerating Plasmonic Vortex Cavities

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Abstract

We experimentally demonstrate plasmonic decelerating vortex cavities generating a succession of surface-confined vortex pulses carrying temporally increasing orbital angular momentum. Using ultra-flat gold surfaces, we spatiotemporally resolve the evolution within the cavities over >300 femtoseconds.

© 2019 The Author(s)

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