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Related Experiment Video

Updated: May 22, 2025

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Hybrid Nonlinear Metasurface Refractive Lens.

Sharon Karepov^1,2, Costantino De Angelis³, Tal Ellenbogen^1,2

¹Department of Physical Electronics, Faculty of Engineering, Tel-Aviv University, Tel-Aviv 6997801, Israel.

|April 3, 2025

Summary

This summary is machine-generated.

Researchers developed hybrid nonlinear meta-lenses by coating linear lenses with nonlinear metasurfaces. This novel approach enables new ways to generate and focus light at the second harmonic frequency for advanced optical applications.

Keywords:

Metasurface applications metasurface transferring metasurfaces in thin films metasurfaces on curved substrates nonlinear plasmonic metasurfaces

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Area of Science:

Optics and Photonics
Materials Science
Nanotechnology

Background:

Nonlinear metasurfaces offer advanced light generation and control.
Traditional nonlinear metasurfaces are fabricated on planar substrates.
Encoding functionality solely in metasurface design limits integration.

Purpose of the Study:

To explore a novel route for nonlinear metasurface-based optics.
To create hybrid nonlinear refractive elements by combining linear optics with nonlinear metasurfaces.
To demonstrate a functional hybrid nonlinear meta-lens.

Main Methods:

Coating a plano-convex linear refractive lens with a conformable nonlinear metasurface membrane (400 nm thick).
Characterizing the hybrid meta-lens's optical performance.
Analyzing spectral and polarization responses.

Main Results:

The hybrid meta-lens successfully generated light at the second harmonic frequency.
The element focused light according to its combined linear and nonlinear optical properties.
An image was generated at the second harmonic wavelength, demonstrating functional imaging capabilities.

Conclusions:

This work introduces a new class of hybrid nonlinear refractive elements.
Coating linear optics with nonlinear metasurfaces provides a versatile platform.
This approach opens avenues for novel light control in diverse applications.