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- Title
Rotational varifocal moiré metalens made of single-crystal silicon meta-atoms for visible wavelengths.
- Authors
Ogawa, Chikara; Nakamura, Sotaro; Aso, Takumi; Ikezawa, Satoshi; Iwami, Kentaro
- Abstract
Then, the incident light passed through one of three bandpass filters for wavelengths of 633 nm (FL632.8-3, Thorlabs Inc., center wavelength = 632.8 nm, FWHM = 3 nm), 532 nm (FL532-3, Thorlabs Inc., center wavelength = 532 nm, FWHM = 3 nm), and 633 nm (FB440-10, Thorlabs Inc., center wavelength = 440 nm, FWHM = 10 nm), as well as the resolution test target (USAF 1951). Keywords: dielectric metasurface; metalens; silicon; varifocal; waveguide EN dielectric metasurface metalens silicon varifocal waveguide 1941 1948 8 05/12/22 20220401 NES 220401 1 Introduction Metasurfaces are a planar type of metamaterial and are promising as optical components. Rotational varifocal moiré metalens made of single-crystal silicon meta-atoms for visible wavelengths For the negative focal lengths, at the same mutual rotation angle, a shorter wavelength resulted in a larger image and greater focal length.
- Subjects
WAVELENGTHS; SAPPHIRES; FOURIER transform optics; LIGHT filters; FOCAL length; NEUTRAL density filters; DIFFRACTIVE optical elements
- Publication
Nanophotonics (21928606), 2022, Vol 11, Issue 9, p1941
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2021-0690