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Radiationless optical modes in metasurfaces: recent progress and applications.

Naseer Muhammad^1,2, Zhaoxian Su^1,2, Qiang Jiang^1,2

¹School of Optics and Photonics, Beijing Engineering Research Center of Mixed Reality and Advanced Display, Beijing Institute of Technology, Beijing 100081, China, Beijing, 100081, China.

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|August 16, 2024

Summary

Non-radiative optical modes offer strong light confinement and enhanced light-matter interactions. These radiationless states in nanostructures boost nonlinear processes and lasing, with broad applications in metasurfaces.

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Area of Science:

* Photonics and Nanophotonics: Focus on optical phenomena in nanostructured materials.

Background:

* Non-radiative optical modes exhibit strong light confinement and high quality (Q)-factor.
* Destructive interference of multipoles results in radiationless states with trapped near-fields.
* These modes are localized within the radiation continuum, offering infinite Q-factor and lifetime.

Purpose of the Study:

* To review the fundamental principles of non-radiative optical modes.
* To highlight their potential for enhanced light-matter interactions.
* To discuss applications in lasing and nonlinear processes within metasurfaces.

Main Methods:

* Theoretical analysis of multipole interference and mode confinement.
* Investigation of radiationless states in various nanostructure configurations.
* Review of experimental and simulation studies on these optical modes.

Main Results:

* Non-radiative modes enable significant field enhancement and localization.
* Radiationless states are crucial for boosting nonlinear optical phenomena.
* Infinite Q-factors and lifetimes are achievable in specific configurations.

Conclusions:

* Non-radiative optical modes are key to advanced photonic applications.
* Their unique properties facilitate enhanced light-matter interactions.
* This review provides insights into their diverse roles in linear and nonlinear metasurfaces.