Gradient Nonlinear Pancharatnam-Berry Metasurfaces

Mykhailo Tymchenko, Juan Sebastian Gomez Diaz, Jongwon Lee, Nishant Nookala, Mikhail A. Belkin, Andrea Alù

Research output: Contribution to journalArticlepeer-review

96 Scopus citations

Abstract

We apply the Pancharatnam-Berry phase approach to plasmonic metasurfaces loaded by highly nonlinear multiquantum-well substrates, establishing a platform to control the nonlinear wave front at will based on giant localized nonlinear effects. We apply this approach to design flat nonlinear metasurfaces for efficient second-harmonic radiation, including beam steering, focusing, and polarization manipulation. Our findings open a new direction for nonlinear optics, in which phase matching issues are relaxed, and an unprecedented level of local wave front control is achieved over thin devices with giant nonlinear responses.

Original languageEnglish (US)
Article number207403
JournalPhysical Review Letters
Volume115
Issue number20
DOIs
StatePublished - Nov 10 2015
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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