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Interactions of spatially displaced surface plasmon vortices

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The potential to mold user-desired surface plasmon field flow with the existence of two simultaneous surface plasmon vortices with proper spatial offset is studied numerically. In the first case, a squeezed vortex with opposite rotation direction is generated between two co-rotating vortices. In the second case, a linear flow channel is formed in between two counter-rotating vortices.

© 2018 Optical Society of Japan

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