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Plasmons lend a helping hand

Optical modulators typically rely on weak nonlinear light–matter interactions to modulate light with light. But using surface plasmons to excite quantum dots, researchers at the California Institute of Technology have now demonstrated an efficient approach to chip-based all-optical modulation.

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Figure 1: A schematic of the all-optical modulation approach adopted by Pacifici and colleagues1.


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Lereu, A. Plasmons lend a helping hand. Nature Photon 1, 368–369 (2007).

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