407 citations · 1.3k across the 28 of their papers we have counts for
28 papers
Deep-learning-driven end-to-end metalens imaging
Joonhyuk Seo, Jaegang Jo, Joohoon Kim +7
Recent advances in metasurface lenses (metalenses) have shown great potential for opening a new era in compact imaging, photography, light detection and ranging (LiDAR), and virtua…
Large area optimization of meta-lens via data-free machine learning
Maksym V. Zhelyeznyakov, Johannes E. Froch, Anna Wirth-Singh +4
Sub-wavelength diffractive optics meta-optics present a multi-scale optical system, where the behavior of constituent sub-wavelength scatterers, or meta-atoms, need to be modelled…
Arbitrary structured quantum emission with a multifunctional imaging metalens
Chi Li, Jaehyuck Jang, Trevon Badloe +8
Structuring light emission from single-photon emitters in multiple degrees of freedom is of a great importance for quantum information processing towards higher dimensions. However…
Scalably manufactured high-index atomic layer-polymer hybrid metasurfaces for high-efficiency virtual reality metaoptics in the visible
Joohoon Kim, Junhwa Seong, Wonjoong Kim +14
Metalenses, which exhibit superior light-modulating performance with sub-micrometer-scale thicknesses, are suitable alternatives to conventional bulky refractive lenses. However, f…
Multicolor and 3D holography realized by inverse design of single-celled metasurfaces
Sunae So, Joohoon Kim, Trevon Badloe +4
Metasurface-generated holography has emerged as a promising route for fully reproducing vivid scenes by manipulating the optical properties of light using ultra-compact devices. Ho…
Second-harmonic optical circular dichroism of plasmonic chiral helicoid-III nanoparticles
Florian Spreyer, Jungho Mun, Hyeohn Kim +4
While plasmonic particles can provide optical resonances in a wide spectral range from the lower visible up to the near-infrared, often symmetry effects are utilized to obtain part…
An achromatic metafiber for focusing and imaging across the entire telecommunication range
Haoran Ren, Jaehyuck Jang, Chenhao Li +6
Dispersion engineering is essential to the performance of most modern optical systems including fiber-optic devices. Even though the chromatic dispersion of a meter-scale single-mo…
Incident-polarization-independent spin Hall effect of light reaching a half beam waist
Minkyung Kim, Dasol Lee, Junsuk Rho
The spin Hall effect of light, a spin-dependent transverse splitting of light at an optical interface, is intrinsically an incident-polarization-sensitive phenomenon. Recently, an…
Metasurface Holography over 90% Efficiency in the Visible via Nanoparticle-Embedded-Resin Printing
Joohoon Kim, Dong Kyo Oh, Hongyoon Kim +10
Metasurface holography, the reconstruction of holographic images by modulating the spatial amplitude and phase of light using metasurfaces, has emerged as a next-generation display…
Spin Hall effect of light under arbitrarily polarized and unpolarized light
Minkyung Kim, Dasol Lee, Junsuk Rho
The spin Hall effect of light (SHEL), which refers to a spin-dependent and transverse splitting at refraction and reflection phenomena, inherently depends on the polarization state…
Radiative control of localized excitons at room temperature with an ultracompact tip-enhanced plasmonic nano-cavity
Hyeongwoo Lee, Inki Kim, Chulho Park +7
In atomically thin semiconductors, localized exciton (X) coupled to light shows single quantum emitting behaviors through radiative relaxation processes providing a new class o…
Backward phase-matched second-harmonic generation from stacked metasurfaces
Timo Stolt, Jeonghyun Kim, Sébastien Héron +6
We demonstrate phase-matched second-harmonic generation (SHG) from three-dimensional metamaterials consisting of stacked metasurfaces. To achieve phase matching, we utilize a novel…
Biomimetic Ultra-Broadband Perfect Absorbers Optimised with Reinforcement Learning
Trevon Badloe, Inki Kim, Junsuk Rho
By learning the optimal policy with a double deep Q-learning network, we design ultra-broadband, biomimetic, perfect absorbers with various materials, based the structure of a moth…
Describing meta-atoms using the exact higher-order polarizability tensors
Jungho Mun, Sunae So, Jaehyuck Jang +1
In nanophotonics, multipole framework has become an indispensable theoretical tool for analyzing subwavelength meta-atoms and their radiation properties. This work presents higher-…
Topological edge and corner states in a two-dimensional photonic Su-Schrieffer-Heeger lattice
Minkyung Kim, Junsuk Rho
Implementation of topology on photonics has opened new functionalities of photonic systems such as topologically protected boundary modes. We present polarization-dependent topolog…
Observation of enhanced optical spin Hall effect in a vertical hyperbolic metamaterial
Minkyung Kim, Dasol Lee, Tae Hak Kim +3
Hyperbolic metamaterials, horizontally stacked metal and dielectric multilayer, have recently been studied as a platform to observe optical spin Hall effect. However, the large opt…
Simultaneous inverse design of materials and parameters of core-shell nanoparticle via deep-learning: Demonstration of dipole resonance engineering
Sunae So, Jungho Mun, Junsuk Rho
Recent introduction of data-driven approaches based on deep-learning technology has revolutionized the field of nanophotonics by allowing efficient inverse design methods. In this…
Designing nanophotonic structures using conditional-deep convolutional generative adversarial networks
Sunae So, Junsuk Rho
Data-driven design approaches based on deep-learning have been introduced in nanophotonics to reduce time-consuming iterative simulations which have been a major challenge. Here, w…
Topologically non-trivial photonic surface degeneracy in a photonic metamaterial
Minkyung Kim, Dasol Lee, Dongwoo Lee +1
The recent development of topological photonics has revealed a variety of intriguing phenomena such as Weyl degeneracy. However, topologically non-trivial degeneracy with higher di…
Extremely broadband topological surface states in a photonic topological metamaterials
Minkyung Kim, Dasol Lee, Wenlong Gao +4
Metamaterials, artificially engineered materials consisting of subwavelength unit cell, have shown potentials in light manipulation with their extraordinary optical properties. Esp…
Finding the best design parameters for optical nanostructures using reinforcement learning
Iman Sajedian, Trevon Badloe, Junsuk Rho
Recently, a novel machine learning model has emerged in the field of reinforcement learning known as deep Q-learning. This model is capable of finding the best possible solution in…
Predicting resonant properties of plasmonic structures by deep learning
Iman Sajedian, Jeonghyun Kim, Junsuk Rho
Deep learning can be used to extract meaningful results from images. In this paper, we used convolutional neural networks combined with recurrent neural networks on images of plasm…
Tungsten based metasurface absorber for visible regime
Ahsan Sarwar Rana
Utilizing solar energy requires perfect absorption by photovoltaic cells for efficient conversion of solar energy into useful electrical energy. Metasurfaces can, not only be used…
Complete amplitude and phase control of light using broadband holographic metasurface
Gun-Yeal Lee, Gwanho Yoon, Seung-Yeol Lee +6
Reconstruction of light profiles with amplitude and phase information, called holography, is an attractive optical technique to display three-dimensional images. Due to essential r…