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Second and third harmonic generation at ε-near-zero crossing point in arrays of plasmonic nanoshells

Creative Commons 'BY' version 4.0 license

We theoretically investigate harmonic generation at ε=0 crossing points where losses are compensated through the inclusion of active photonic materials in metallic nanoshells. This singularity-driven process lowers the thresholds for a plethora of nonlinear optical phenomena. © OSA 2012.

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