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Tunable metasurfaces for visible and SWIR applications
Chang-Won Lee1, Hee Jin Choi2, Heejeong Jeong3
1Institute of Advanced Optics and Photonics, Department of Applied Optics, Hanbat National University, Daejeon, 34158, Korea. cwlee42@hanbat.ac.kr.
Nano Convergence
|January 21, 2020
Summary
This review covers actively tunable metasurfaces for visible and short-wavelength infrared (SWIR) applications. It explores operating principles and challenges for advanced photonic devices.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Growing demand for optical and photonic applications in visible and SWIR spectra.
- Metasurfaces, with subwavelength features, are crucial for controlling electromagnetic waves.
- Development of sub-100-micron active photonic pixelated devices and arrays is ongoing.
Purpose of the Study:
- To review actively tunable or reconfigurable metasurfaces for visible and SWIR spectra.
- To account for the physical operating principles of these metasurfaces.
- To identify current issues and challenges in the field.
Main Methods:
- Focus on metasurfaces with thickness comparable to or smaller than the wavelength.
- Exploration of meta-atoms controlled by external stimuli for large phase shifts.
- Review of existing literature on tunable and reconfigurable metasurfaces.
Main Results:
- Metasurfaces offer potential for arrayed two-dimensional active optics.
- Actively controlled meta-atoms enable manipulation of light.
- Summary of diverse applications including imaging, sensing, and displays.
Conclusions:
- Actively tunable metasurfaces are key for next-generation photonic devices.
- Further research is needed to overcome current limitations.
- The field holds significant promise for advanced optical functionalities.
