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Active optical metasurfaces: comprehensive review on physics, mechanisms, and prospective applications
Jingyi Yang1,2, Sudip Gurung1,2, Subhajit Bej2
1Department of Physics & Astronomy, University of California, Irvine, CA 92697, United States of America.
Summary
Tunable optical metasurfaces offer dynamic control over light properties for advanced optical devices. This review details ten mechanisms, comparing their performance, limitations, and applications for future photonic innovations.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Optical metasurfaces, thin engineered surfaces, enable precise control of light's phase, amplitude, and polarization.
- Integrating active functionalities is crucial for next-generation flat optical components and devices.
Purpose of the Study:
- To provide a comprehensive overview of recently developed tunable optical metasurfaces.
- To analyze ten major tunable metasurface mechanisms, comparing their performance, capabilities, and limitations.
Main Methods:
- Review of recent literature on tunable optical metasurfaces.
- Categorization and analysis of ten distinct tunable metasurface mechanisms.
- Comparison of performance metrics, functionalities, and potential applications for each mechanism.
Main Results:
- Detailed outline of performance metrics for various tunable metasurfaces.
- Comparative analysis of the strengths and weaknesses of ten different tuning mechanisms.
- Identification of early-stage device functions enabled by active metasurfaces, such as beam steering and tunable filters.
Conclusions:
- Active metasurfaces show significant promise for practical applications, but challenges remain.
- Further development of tunable mechanisms is anticipated to drive significant advancements in photonic applications.
- Discussion of prospective applications, emerging technologies, and future research directions for tunable optical metasurfaces.
