Here we introduce a Hybrid Achromatic Metalens (HAML) that overcomes this trade-off and offers improved focusing efficiency over a broad wavelength range from 1000鈥 1800 nm. HAMLs can be designed by combining recursive ray-tracing and simulated phase libraries rather than computationally intensive ...
Here we introduce a Hybrid Achromatic Metalens (HAML), that overcomes this trade-off and offers improved focusing efficiency over a broad wavelength range from 1000 - 1800 nm. Fabricated HAMLs demonstrated diffraction limited performance for numerical apertures (NA) of 0.27, 0.11, and 0.06 with ...
For example, large-scale achromatic metalenses have been used as near-eye optical components in VR imaging systems (Fig. 12a)213. The achromatic metalens-integrated VR devices consist of a laser-illuminated micro-LC display (µLCD), an eyeball model, and a meta-eyepiece. The meta-eyepiece ...
it is possible to unleash respective advantages and largely shake off the high demand on computational resources. In the hybrid model, deep learning algorithm serves as a high-speed agent of EM numerical simulator. For example, by connecting a trained forward neural network with...
As a result, we can render a metalens achromatic and polarization-insensitive across nearly the entire visible spectrum from wavelength 460 nm to 700 nm, while maintaining diffraction-limited performance. The metalens is comprised of just a single layer of TiO2 nanofins and has a numerical ...
As a result, we can render a metalens achromatic and polarization-insensitive across nearly the entire visible spectrum from wavelength λ = 460 nm to 700 nm, while maintaining diffraction-limited performance. The metalens is comprised of just a single layer of TiO2 nanofins and has a numerical...
achromatic metalenses covering the entire visible spectrum. Here, we show that by judicious design of nanofins on a surface, it is possible to simultaneously control the phase, group delay and group delay dispersion of light, thereby achieving a transmissive achromatic metalens with large bandwidth....
Polarization-insensitive metasurfaces with multi-wavelength or broadband achromatic properties may be a solution. However, it is challenging to achieve both broadband and high NA characteristics at the same time. Figure 12: Spiral metalens for edge-enhanced imaging [134]. (A) The phase profile of...
Broadband achromatic metalens with high numerical aperture via hybrid all-dielectric meta-atoms in the visible region In this work, we design a broadband achromatic metalens (BAM) with high NA, which is composed of hybrid all-dielectric meta-atoms in the visible region. By simultaneously and indep...
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 ...