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Angular Momentum about an Arbitrary Axis

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Related Experiment Video

Updated: Dec 21, 2025

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Controlling angular dispersions in optical metasurfaces.

Xiyue Zhang¹, Qi Li¹, Feifei Liu¹

¹1State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), and Department of Physics, Fudan University, Shanghai, 200438 China.

Light, Science & Applications

|May 16, 2020

Summary

This summary is machine-generated.

Researchers developed a new method to control light manipulation using optical metasurfaces. This strategy allows for predesigned angular dispersions, enabling novel angle-multiplexed functional meta-devices.

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Last Updated: Dec 21, 2025

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Published on: June 7, 2019

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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Published on: November 21, 2019

Area of Science:

Optics and Photonics
Materials Science

Background:

Metasurfaces offer advanced light manipulation capabilities.
Uncontrolled angular dispersion limits the application of many existing meta-devices.

Purpose of the Study:

To propose a general strategy for realizing optical metasurfaces with desired angular dispersions.
To demonstrate novel meta-devices with angle-multiplexed functionalities.

Main Methods:

Controlling near-field couplings between meta-atoms.
Tailoring the radiation pattern of individual meta-atoms.
Experimental demonstration of meta-devices with predesigned angular dispersions.

Main Results:

Demonstrated incident-angle-insensitive and angle-selective absorbers.
Developed a multifunctional meta-polarizer with angle-varying functionality.
Designed and numerically verified a gradient meta-device with angle-dependent wavefront control.

Conclusions:

Established a new platform for angle-multiplexed functional meta-devices.
Significantly expanded wave-manipulation capabilities of optical metasurfaces.
Enabled precise control over angular dispersion for advanced optical applications.