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Imaging Performance of Polarization-Insensitive Metalenses
- Source :
- ACS Photonics. 6:1493-1499
- Publication Year :
- 2019
- Publisher :
- American Chemical Society (ACS), 2019.
-
Abstract
- Metasurfaces have recently emerged as a promising technology to realize flat optical components with customized functionalities. In particular, their application to lenses in various imaging systems is of significant interest. However, a systematic and complete study of the focusing and imaging behavior of metalenses has not yet been conducted. In this work we analyze not only the on-axis focusing performance, but also the field-dependent wavefront aberrations via a phase-retrieval optimization method. We find that, particularly for high-NA metalenses, the field-dependent geometrical aberrations like coma are dominant at the design wavelength, while for longer and shorter operation wavelengths, the effective numerical aperture is decreased and mainly spherical aberrations are dominant. Additionally, we investigate the spectral and angular bandwidth of a polarization-insensitive metalens by analyzing the metalens efficiencies as a function of numerical aperture, field angle, and wavelength. We then compare...
- Subjects :
- Wavefront
Field angle
Physics
business.industry
Bandwidth (signal processing)
02 engineering and technology
021001 nanoscience & nanotechnology
Polarization (waves)
01 natural sciences
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Numerical aperture
010309 optics
Wavelength
Optics
0103 physical sciences
Electrical and Electronic Engineering
0210 nano-technology
business
Biotechnology
Subjects
Details
- ISSN :
- 23304022
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- ACS Photonics
- Accession number :
- edsair.doi...........2dafabb8147df04b3978734ceb956b0f