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Related Experiment Video

Updated: Sep 28, 2025

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

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Published on: June 7, 2019

Perfect Control of Diffraction Patterns with Phase-Gradient Metasurfaces.

Yuxiang Wang¹, Yueyi Yuan¹, Guohui Yang¹

¹Department of Microwave Engineering, Harbin Institute of Technology, Harbin 150001, China.

ACS Applied Materials & Interfaces

|March 31, 2022

Summary

This summary is machine-generated.

Researchers developed a novel multi-beam phase-gradient metasurface (PGM) for precise control over diffraction patterns. This technology enables independent control of multiple beams

Keywords:

beam deflection diffraction orders energy distribution multi-beams phase-gradient metasurfaces

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Last Updated: Sep 28, 2025

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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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Published on: August 12, 2013

Area of Science:

Optics and Photonics
Metasur surfaces
Electromagnetism

Background:

Phase-gradient metasurfaces (PGMs) enable beam deflection via spatial phase control.
Existing PGMs primarily focus on single diffraction orders, limiting energy control.
Current multi-beam PGMs lack control over energy distribution among beams.

Purpose of the Study:

To propose a general method for perfect control of diffraction patterns using multi-beam PGMs.
To enable arbitrary control over diffraction beams and their energy distribution.
To demonstrate the design and fabrication of PGMs for multi-beam applications.

Main Methods:

Derivation of an analytical solution for arbitrary control of diffraction beams.
Design and fabrication of three metasurfaces with varying diffraction orders and energy ratios.
Experimental validation through far-field pattern measurements.

Main Results:

Achieved generation and energy distribution in high-order diffraction beams.
Designed metasurfaces demonstrated near 100% diffraction efficiency for desired channels.
Simulated and measured far-field patterns showed excellent agreement with theoretical predictions.

Conclusions:

The proposed method allows for perfect control of diffraction patterns.
This technique offers a new approach for designing multi-beam antennas.
The findings have significant implications for wireless communication applications.