dispersive materi-als. This can be attributed to two separate factors: dispersion arising from a periodic lattice (see Supplementary Fig. 1 for a detailed discus-sion), as well as light confinement in either a resonant or guided man-ner. Previous works have addressed this challenge by using mu...
A broadband achromatic metalens for focusing and imaging in the visible Nature Nanotechnology(IF38.1)Pub Date : 2018-01-01, DOI:10.1038/s41565-017-0034-6 Wei Ting Chen , Alexander Y. Zhu , Vyshakh Sanjeev , Mohammadreza Khorasaninejad , Zhujun Shi , Eric Lee , Federico Capasso ...
Here, we realize a silicon nitride metalens array in the visible region that can be used to reconstruct 3D optical scenes in the achromatic integral imaging for white light. The metalens array contains 60 × 60 polarization-insensitive metalenses with nearly diffraction-limited focusing. The ...
et al. A broadband achromatic metalens for focusing and imaging in the visible. Nat. Nanotechnol. 13, 220–226 (2018). Article ADS Google Scholar Arbabi, A., Arbabi, E., Horie, Y., Kamali, S. M. & Faraon, A. Planar metasurface retroreflector. Nat. Photon. 11, 415–420 (2017)....
A broadband achromatic metalens for focusing and imaging in the visible. Nat Nanotechnol 2018;13:220–6.10.1038/s41565-017-0034-6Search in Google Scholar PubMed [187] Wang S, Wu PC, Su VC, et al. A broadband achromatic metalens in the visible. Nat Nanotechnol 2018;13:227–32.10.1038/...
A broadband achromatic metalens for focusing and imaging in the visible A broadband achromatic metalens for focusing and imaging in the visible. Nat Nanotech 2018;13:220-6.Chen WT, Zhu AY, Sanjeev V, et al. A broadband achromatic met- alens for focusing and imaging in the visible. Nat ...
The focusing efficiency of the achromatic metalens is also optimized and averaged as the result of phase optimization within a wide band for the building elements, while it is lowered comparing with the regular metalens without broadband achromatic designing. Using this combined designing approach, ...
we demonstrate a polarization-insensitive metalens using otherwise anisotropic nanofins which offer additional control over the dispersion and phase of the output light. As a result, we can render a metalens achromatic and polarization-insensitive across nearly the entire visible spectrum from wavelength ...
As a result, no metalens has demonstrated full-colour imaging in the visible wavelength. Here, we show a design and fabrication that consists of GaN-based integrated-resonant unit elements to achieve an achromatic metalens operating in the entire visible region in transmission mode. The focal ...
Principle of polarization-insensitive and achromatic focusing To achromatically focus a broadband incident beam in a diffraction limited spot, a metalens must impart a spatially and frequency-dependent phase profile given by $$\varphi {\mathrm{(}}r,\omega {\mathrm{) = - }}\frac{\omega }{c}...