We observe optical trapping and manipulation of dielectric microparticles using autofocusing radially symmetric Airy beams. This is accomplished by exploiting either the inward or outward transverse acceleration associated with their chirped wavefronts. experimentally demonstrate, for first time to our knowledge, that such beams morph into nondiffracting Bessel in far-field. Furthermore, ability guiding transporting along primary rings this class explored.

We show that new families of diffraction-free nonparaxial accelerating optical beams can be generated by considering the symmetries underlying vectorial Helmholtz equation. Both two-dimensional transverse electric and magnetic wave fronts are possible, capable moving along elliptic trajectories. Experimental results corroborate these predictions when waves launched from either major or minor axis ellipse. In addition, three-dimensional spherical nondiffracting field configurations presented...

Thanks to their unique interference, accelerating beams appear curve as they travel. They require no waveguiding structures or external potentials and even in free space. This beautiful phenomenon has led many intriguing ideas exciting new applications.

We demonstrate that the pump's spatial input profile can provide additional degrees of freedom in tailoring at will nonlinear dynamics and ensuing spectral content supercontinuum generation highly multimoded optical fibers. Experiments simulations carried out 1550 nm indicate modal composition beam substantially alter soliton fission process as well resulting Raman dispersive wave eventually lead to such a multimode environment. Given multitude conceivable initial conditions, our results...

Metamaterials exhibit optical properties not observed in traditional materials. Such behavior emerges from the interaction of light with precisely engineered subwavelength features built different constituent Recent research into design and fabrication metamaterial-based devices has established a foundation for next generation functional Of particular interest is all-dielectric metasurface, two-dimensional metamaterial exploiting shape-dependent resonant while avoiding losses through use...

Optical materials engineered to dynamically and selectively manipulate electromagnetic waves are essential the future of modern optical systems. In this paper, we simulate various metasurface configurations consisting periodic 1D bars or 2D pillars made ternary phase change material Ge2Sb2Te5 (GST). Dynamic switching behavior in reflectance is exploited due a drastic refractive index between crystalline amorphous states GST. Selectivity reflection transmission spectra manipulated by...

In this Letter we show that by appropriately providing an auxiliary "dress" beam one can extend the longevity of optical filament almost order magnitude. These dressed filaments propagate substantially further judiciously harnessing energy from their secondary reservoir. This possibility is theoretically investigated in air when with a conically convergent annular Gaussian beam.

Many single-layer dielectric metasurfaces studied today offer optimal performance by maximizing the refractive index contrast between a meta-atom and background material, thereby increasing field confinement enhancing optical resonance. Such architectures typically utilize high-index meta-atoms contrasted against an air background. Patterning can be done through deposition growth of materials or etching designs into layer. Unfortunately, such structures may easily damaged, are susceptible to...

The modern-day resurgence of machine learning has encouraged researchers to revisit older problem spaces from a new perspective. One promising avenue been implementing deep neural networks aid in the simulation physical systems. In field optics, densely connected able mimic wave propagation have recently constructed. These diffractive (D2NN) not only offer insights into propagation, but provide novel tool for investigating and discovering multi-functional elements. this paper, we derive an...

Electric Vehicle (EV) Adoption is accelerating across the United States, driven by consumer demand, public policy at all levels of government, and industry commitments to electrification. As a result, more than 50% new car sales are forecast be electric 2030. This article provides snapshot how Portland General Company (PGE), leading investor-owned utility based in Portland, OR, USA, preparing for increase demand from EVs on power grid.

We demonstrate optical interactions between stable self-trapped beams in soft-matter systems with pre-engineered saturable self-focusing nonlinearities. Our experiments, carried out dilute suspensions of particles negative polarizabilities, show that beam can vary from attractive to repulsive, or display an energy exchange depending on the initial relative phases. The corresponding observations are good agreement theoretical predictions.

Dressed optical filaments offer a way to greatly protract an filament's natural length while at the same time mitigating nonlinear losses and unwanted multifilamentation effects. In this article, we first theoretically reexamine quasi-linear propagation dynamics of standard Gaussian-ring wavefront then proceed explore several dress beam arrangements equal-energy. The purpose study is numerically simulate configurations which more economically utilize finite amount energy available for...

We introduce a class of propagation invariant spatiotemporal optical wave packets with spherical harmonic symmetries in their field configurations. The evolution these light orbitals is considered theoretically anomalously dispersive media, and spinning dynamics are analyzed terms corresponding energy flows. Similarly, localized waves generated via superposition from Archimedean Platonic solids $\stackrel{P\vec}{k}\ensuremath{-}\ensuremath{\omega}$ space investigated this work.

Planar cholesteric liquid crystals (CLCs) are well known for having vibrant reflective coloration that is associated with the handedness and pitch length of helicoidal twist crystalline molecules. If one observes these films at oblique angles, reflected colors blue-shift increasing angles from normal. On other hand, uniform lying helix (ULH) CLCs, where axis lies in plane substrate, well-known but not typically colors. Here, we examine unique optical properties CLCs incidence specifically...

Abstract NP-hard combinatorial optimization problems are in general hard that their computational complexity grows faster than polynomial scaling with the size of problem. Thus, over years there has been a great interest developing unconventional methods and algorithms for solving such problems. Here, inspired by nonlinear optical process q -photon down-conversion, which photon is converted into degenerate lower energy photons, we introduce dynamical model builds on coupled single-variable...

The recent advent of diffractive deep neural networks or D 2 NNs has opened new avenues for the design and optimization multi-functional optical materials; despite effectiveness NN approach, there is a need making these as well algorithms more general computationally efficient. work demonstrated in this paper brings significant improvements to both areas by introducing an algorithm that performs inverse on fully nonlinear network - assisted adjoint sensitivity analysis which we term (DNA) ....

Machine learning has been used to accelerate studies in the dynamics of optical pulses. In this study, we use machine investigate optimal design supercontinuum-generating hollow-core antiresonant fibers (HC-ARFs) pressurized and filled with methane. Artificial neural networks (ANNs) are trained replace numerical solvers, simulation fibers, provide a more rapid fiber procedure. We first an analytical model approximate dispersion loss methane-filled silica HC-ARF. This approximation is by...

We demonstrate the generation of spectrally tunable phase-dependent wavefronts, using 2D Airy as primary test case, via a polymer-stabilized cholesteric liquid crystal (PSCLC) element. Specifically, we use novel spatial light modulator (SLM) based projection system to photo-align initial helix angle landscape PSCLC so that it imparts appropriate cubic phase profile reflected beam. This element is selective, with reflection bandwidth ≈ 100 nm, and electrically from λ = 530 nm 760 nm. Under...

Woven fabric composites provide an attractive platform for integrating electromagnetic functionality—such as conformal load-bearing antennas and frequency selective surfaces—into a structural platform. One practical fabrication method conductive elements within woven composite system involves using additive manufacturing systems such screen printing. While printing is inherently scalable, flexible cost effective method, little known about the high electrical properties of its inks when they...

We investigate the linear propagation of Gaussian-apodized solutions to paraxial wave equation in free-space and first-order optical systems. In particular, we present complex coordinate transformations that yield a very general efficient method apply Gaussian apodization (possibly with initial phase curvature) solution equation. Moreover, show how this can be extended from free space describe behavior through nonimaging systems by combining our transform approach ray transfer matrix...

We theoretically demonstrate that the pump's spatial profile can provide a degree of freedom in tailoring at will nonlinear dynamics and ensuing spectral content supercontinuum generation highly multimoded optical fibers.

Optical metamaterials can achieve optical performance specifications otherwise unattainable compared to their bulk constituents via the use of skillfully engineered nanoscale features. These features function as sub-wavelength scatterers, causing incident light interact with in a manner which is crucially dependent on geometry. To design next generation functional materials, scientists and engineers must realize new methods prudently explore near-infinite number possible metamaterial...

We investigated the nonlinear Raman-Kerr effect of methane in hollow core antiresonant fibers and used ANNs to correlate fiber geometry simulated spectra, allowing for rapid design supercontinuum-generating optical fibers.