The inverse design of optical metasurfaces is a rapidly emerging field that has already shown great promise in miniaturizing conventional optics as well developing completely new functionalities. Such process relies on many forward simulations device's response order to optimize its performance. We present data-driven simulation framework for the more accurate than methods based local phase approximation, factor 104 times faster and requires 15 less memory mesh-based solvers not constrained...

Abstract Sub-wavelength diffractive optics, commonly known as meta-optics, present a complex numerical simulation challenge, due to their multi-scale nature. The behavior of constituent sub-wavelength scatterers, or meta-atoms, needs be modeled by full-wave electromagnetic simulations, whereas the whole meta-optical system can using ray/ Fourier optics. Most techniques for large-scale meta-optics rely on local phase approximation (LPA), where coupling between dissimilar meta-atoms is...

Sub-wavelength diffractive optics, commonly known as metasurfaces, have recently garnered significant attention for their ability to create ultra-thin flat lenses with extremely short focal lengths. Several materials different refractive indices been used metasurface (metalenses). In this paper, we analyze the role of material on performance these metalenses. We employ both forward and inverse design methodologies perform our analysis. found that, while high index allow extreme reduction...

Quantitative phase imaging (QPI) recovers the exact wavefront of light from intensity measurements. Topographical and optical density maps translucent microscopic bodies can be extracted these quantified shifts. We demonstrate quantitative at tip a coherent fiber bundle using chromatic aberrations inherent in silicon nitride hyperboloid metalens. Our method leverages spectral multiplexing to recover multiple defocus planes single capture color camera. 0.5 mm aperture metalens shows robust...

We present a data-driven forward simulation framework for the inverse design of metasurfaces that is more accurate than methods based on local phase approximation, factor 10 4 times faster mesh solvers.

The ability to tailor the spectral response of photonic devices is paramount advancement a broad range applications. vast design space offered by disordered optical media provides enhanced functionality for tailoring while also making it challenging map properties such complex systems their structural attributes. In this work, we investigate correlations between configuration statistics random metasurfaces and transmissivity in visible, leverage those develop reduced phase space. latter part...

As artificial neural networks (ANNs) continue to make strides in wide-ranging and diverse fields of technology, the search for more efficient hardware implementations beyond conventional electronics is gaining traction. In particular, optical potentially offer extraordinary gains terms speed reduced energy consumption due intrinsic parallelism free-space optics. At same time, a physical nonlinearity, crucial ingredient an ANN, not easy realize optics, which restricts potential this platform....

We present an experimental implementation of the recently proposed dual-space microscopy (DSM), optical technique based on simultaneous observation object in position and momentum spaces, using computer-controlled hemispherical digital condensers. demonstrate that DSM is capable resolving structures below Rayleigh resolution limit.

Large-area metasurfaces composed of discrete wavelength-scale scatterers present an extremely large number degrees freedom to engineer optical element. While these provide tremendous design flexibility, they also a central challenge in metasurface design: how optimally leverage towards desired function. Inverse is attractive solution for this challenge. Here, we report inverse method exploiting T-matrix scattering ellipsoidal scatterers. Multi-functional, polarization multiplexed were...

We explore the convergence of dual-space microscopy (DSM) phase-recovery algorithm. DSM is an optical technique based on simultaneous observation object in position and momentum spaces. present one-dimensional (1D) simulations this technique, demonstrating that capable to resolve periodic nonperiodic structures with a resolution well below Rayleigh limit. Using simple faster 1D version full 2D algorithm, we simulated for thousands different samples. Our results demonstrate algorithm always...

Quantitative phase imaging (QPI) recovers the exact wavefront of light from intensity measured by a camera. Topographical maps translucent microscopic bodies can be extracted these quantified shifts. We demonstrate quantitative at tip an optical fiber endoscope with chromatic silicon nitride metalens. Our method leverages spectral multiplexing to recover multiple defocus planes in single capture. The half millimeter wide metalens shows capability 280 field view and 0.1{\lambda} sensitivity...

We investigate correlations between the spectral responses of one- and two-dimensional random arrays particles their configuration statistics. exploit these for prediction such complex systems in visible wavelength range.

We propose an all-silicon metasurface doublet that performs imaging in the mid-infrared only along a predefined light propagation direction. As second application, we optimize two metasurfaces to perform when used conjunction with each other.

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 by full-wave electromagnetic simulations, whereas whole meta-optical system can using ray/ wave optics. Current simulation techniques for large-scale rely on local phase approximation (LPA), coupling between dissimilar meta-atoms are completely neglected. Here we introduce physics-informed neural network, which...

Many emerging, high-speed, reconfigurable optical systems are limited by routing complexity when producing dynamic, two-dimensional (2D) electric fields. We propose a gradient-based inverse-designed, static phase-mask doublet to generate arbitrary 2D intensity wavefronts using one-dimensional (1D) spatial light modulator (SLM). numerically simulate the capability of mapping each point in 49 element 1D array distinct <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline">...