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Ultrafast control of third-order optical nonlinearities in fishnet metamaterials.

ABSTRACT: Nonlinear photonic nanostructures that allow efficient all-optical switching are considered to be a prospective platform for novel building blocks in photonics. We performed time-resolved measurements of the photoinduced transient third-order nonlinear optical response of a fishnet metamaterial. The mutual influence of two non-collinear pulses exciting the magnetic resonance of the metamaterial was probed by detecting the third-harmonic radiation as a function of the time delay between pulses. Subpicosecond-scale dynamics of the metamaterial's χ((3)) was observed; the all-optical χ((3)) modulation depth was found to be approximately 70% at a pump fluence of only 20 μJ/cm(2).

SUBMITTER: Shorokhov AS

PROVIDER: S-EPMC4917860 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Ultrafast control of third-order optical nonlinearities in fishnet metamaterials.

Shorokhov Alexander S AS Okhlopkov Kirill I KI Reinhold Jörg J Helgert Christian C Shcherbakov Maxim R MR Pertsch Thomas T Fedyanin Andrey A AA

Scientific reports 20160623

Nonlinear photonic nanostructures that allow efficient all-optical switching are considered to be a prospective platform for novel building blocks in photonics. We performed time-resolved measurements of the photoinduced transient third-order nonlinear optical response of a fishnet metamaterial. The mutual influence of two non-collinear pulses exciting the magnetic resonance of the metamaterial was probed by detecting the third-harmonic radiation as a function of the time delay between pulses. S ...[more]

PMID: 27335268

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