Files and links (1)
Published (Version of record)CC BY V4.0, Open Access
Journal article
Subwavelength nonlinear phase control and anomalous phase matching in plasmonic metasurfaces.
Nature Communications, Vol.7, 10367
22/Jan/2016
Abstract
Metasurfaces, and in particular those containing plasmonic-based metallic elements, constitute an attractive set of materials with a potential for replacing standard bulky optical elements. In recent years, increasing attention has been focused on their nonlinear optical properties, particularly in the context of second and third harmonic generation and beam steering by phase gratings. Here, we harness the full phase control enabled by subwavelength plasmonic elements to demonstrate a unique metasurface phase matching that is required for efficient nonlinear processes. We discuss the difference between scattering by a grating and by subwavelength phase-gradient elements. We show that for such interfaces an anomalous phase-matching condition prevails, which is the nonlinear analogue of the generalized Snell's law. The subwavelength phase control of optical nonlinearities paves the way for the design of ultrathin, flat nonlinear optical elements. We demonstrate nonlinear metasurface lenses, which act both as generators and as manipulators of the frequency-converted signal.
Details
- Title
- Subwavelength nonlinear phase control and anomalous phase matching in plasmonic metasurfaces.
- Creators
- Euclides Almeida (Corresponding Author) - 972WIS_INST___136Guy Shalem (null) - 972WIS_INST___136Yehiam Prior (Corresponding Author) - 972WIS_INST___136
- Resource Type
- Journal article
- Publication Details
- Nature Communications, Vol.7, 10367; 22/Jan/2016
- Number of pages
- 7
- Language
- English
- DOI
- https://doi.org/10.1038/ncomms10367
- Grant note
- Israel Science Foundation; ICORE program; FTA grant from the Israel National Nano Initiative; Leona M. and Harry B. Helmsley Charitable Trust This work was funded, in part, by the Israel Science Foundation, by the ICORE program, by an FTA grant from the Israel National Nano Initiative, and by a grant from the Leona M. and Harry B. Helmsley Charitable Trust. Discussions with Roy Kaner, Yaara Bondy and Yael Blechman are gratefully acknowledged. Contributions All authors conceived the idea. E.A. fabricated the samples and performed most of the experimental work. E.A. and G.S. performed the numerical simulations. All authors jointly wrote the paper and contributed to the physical understanding of the phenomena described._ALMAME_DELIMITER_
- Record Identifier
- 993265648803596
Metrics
5 Record Views