broadband achromatic metalenses.We elucidated the fundamental limitations of achromatic metalens performance by deriving mathematical equations that govern the tradeoffs between phase dispersion and achievable lens parameters,including the lens diameter,numerical aperture(NA),and bandwidth of achromatic operation....
Consequently, metalens-based optical imaging in the biological transparency window has so far been severely limited. Herein, we experimentally demonstrate a polarization-insensitive, broadband titanium dioxide achromatic metalens for applications in the near-infrared biological imaging. A large-scale ...
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 ...
Broadband achromatic metalens in the visible spectrum In this disclosure, an optical component which comprises an array of metalenses is provided. Each metalens comprises a plurality of nanostructures and a dielectric layer and the nanostructures are disposed on the dielectric layer, and th... DP Tsa...
(SEAS) have developed a polarization-insensitive metalens comprised of non-symmetric nanofins that can achromatically focus light across the visible spectrum without aberrations. Thisflat lenscould be used for everything from virtual or augmented reality headsets to microscopy, lithography, sensors, and...
(with a 60 nm bandwidth) in a reflective metalens was achieved 24 . Other groups have experimentally demonstrated achromatic metalenses in the near infrared with bandwidths of tens of terahertz (THz) 25–27 . However, none of these works demonstrated achromatic imaging.Here, we demonstrate the ...
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 ...
broadband 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 ...
Bandpass-filter-integrated multiwavelength achromatic metalens The design of large-scale,high-numerical-aperture,and broadband achromatism is a big challenge in metalens research. In fact,many colorful imaging systems ... LI Hanmeng,X Xiao,B Fang,... - 光子学研究:英文版 被引量: 0发表: 2021年...
However, the inherent chromatic aberration of the microlens array reduces the viewing quality, and thus, broadband achromatic imaging remains a challenge for integral imaging. Here, we realize a silicon nitride metalens array in the visible region that can be used to reconstruct 3D optical scenes ...