Gradient Nonlinear Pancharatnam-Berry Metasurfaces

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

Research output: Contribution to journalArticlepeer-review

199 Scopus citations


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
Article number207403
JournalPhysical Review Letters
Issue number20
StatePublished - 10 Nov 2015
Externally publishedYes


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