Researchers efficiently couple light from a plane wave into a surface plasmon mode

Researchers from the NIST Center for Nanoscale Science and Technology have made a grating coupler that transmits over 45 % of the incident optical energy from a plane wave into a single surface plasmon polariton (SPP) mode propagating on a flat gold surface, an order-of-magnitude increase over any SPP grating coupler reported to date.

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Researchers efficiently couple light from a plane wave into a surface plasmon mode