Gradient Nonlinear Pancharatnam-Berry Metasurfaces
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Updated: Mar 29, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
Mykhailo Tymchenko1, J Sebastian Gomez-Diaz1, Jongwon Lee1
1Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas 78701, USA.
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.
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