Results 51 to 60 of about 4,317 (190)
Far field subwavelength imaging and focusing using a wire medium based resonant metalens
, 2012 This is the second article in a series of two dealing with the concept of "resonant metalens" we introduced recently [Phys. Rev. Lett. 104, 203901 (2010)].
Derode A +4 more
core +1 more source
Focusing on bandwidth: achromatic metalens limits [PDF]
Optica, 2020 Metalenses have shown great promise in their ability to function as ultracompact optical systems for focusing and imaging. Remarkably, several designs have been recently demonstrated that operate over a large range of frequencies with minimized chromatic aberrations, potentially paving the way for ultrathin achromatic optics.
Federico Presutti, Francesco Monticone
openaire +2 more sources
High-Efficiency Achromatic Metalens Topologically Optimized in the Visible
Nanomaterials, 2023 Metalens, composed of arrays of nano-posts, is an ultrathin planar optical element used for constructing compact optical systems which can achieve high-performance optical imaging by wavefront modulating.
Lijuan Zhang +5 more
doaj +1 more source
Polariton Nanophotonics using Phase Change Materials
, 2019 Polaritons formed by the coupling of light and material excitations such as plasmons, phonons, or excitons enable light-matter interactions at the nanoscale beyond what is currently possible with conventional optics.
Ambrosio, Antonio +16 more
core +1 more source
High-efficiency broadband achromatic metalens for near-IR biological imaging window
Nature Communications, 2021 Though broadband achromatic metalens are attractive for biological applications, existing metalenses show limited performance in the biological imaging window.
Yujie Wang +10 more
doaj +1 more source
Broadband Achromatic Metalens in the Long-Wave Infrared Regime
IEEE Photonics Journal, 2023 Compared with conventional lenses, metalenses can offer smaller form factor, light weight and new functionality, and have become the focus of the recent investigations of metasurface.
Yongjian Zheng +6 more
doaj +1 more source
Momentum Analysis for Metasurfaces
, 2017 Utilizing discrete phase distribution to fit continuous phase distribution has been a primary routine for designing metasurfaces. In the existing method, the validation of the discrete designs is guaranteed only by using the sub-wavelength condition of ...
Chen, Shuqi +4 more
core +1 more source
Topology Optimized Multi-layered Meta-optics
, 2017 We propose a general topology optimization framework for metasurface inverse design that can automatically discover highly complex multi-layered meta-structures with increased functionalities.
Capasso, Federico +4 more
core +1 more source
Advanced Science, EarlyView.A compact eight‐channel electrically tunable varifocal metalens with three single‐layer polarization‐multiplexed bi‐focal metalens and three LC cells. The total thickness of the device is ∼6 mm, while the focal lengths can be switched among eight values (3.6, 4.2, 4.5, 4.9, 6.2, 6.9, 8.4, and 9.6 mm). ABSTRACT As an essential module of optical systems,
Zhiyao Ma +11 more
wiley +1 more source
Bidirectional Switchable Metalens Based on Phase Change Materials of GST
IEEE Photonics Journal, 2023 Metalens can achieve more challenging functions especially dynamic regulation than traditional lens due to its unprecedented ability to manipulate light. In this paper, an approach to realizing switchable bidirectional metalens is proposed based on phase
Yuke Li +7 more
doaj +1 more source