A facile metasurface approach is shown to realize polarization-controllable multichannel superpositions of orbital angular momentum (OAM) states with various topological charges. By manipulating the polarization state incident light, four kinds OAM are realized using a single consisting space-variant arrays gold nanoantennas. As service our authors and readers, this journal provides supporting information supplied by authors. Such materials peer reviewed may be re-organized for online...

In terms of system integration and device miniaturization, a single optical that can possess more tunable functionalities in multiple channels is desirable. As proof concept, we experimentally demonstrate such an ultrathin simultaneously realize polarization-controllable hologram superposition orbital angular momentum (OAM) channels. By continuously controlling the polarization state incident light, polarization-dependent holographic images two along horizontal direction continuous control...

The principle of unconventional holography, called coherence is proposed and experimentally demonstrated for the first time. An object recorded in a hologram reconstructed as three-dimensional distribution complex spatial function, rather than amplitude optical field itself that usually represents image conventional holography. A simple geometry direct visualization proposed, along with experimental results validating principle. Coherence holography shown to be applicable tomography profilometry.

By controlling the irradiance of an extended quasimonochromatic, spatially incoherent source, optical field is generated that exhibits spatial coherence with phase singularities, called vortices. A simple geometry for direct visualization vortices proposed, and local properties evolution vortex are experimentally investigated. To our knowledge, this first quantitative experimental measurement a generic vortex.

We present the first direct experimental evidence of local properties optical vortices in a random laser speckle field. have observed Berry anisotropy ellipse describing anisotropic squeezing phase lines close to vortex cores and quantitatively verified Dennis angular momentum rule for its phase. Some statistics associated with vortices, such as density, eccentricity, relation zero crossings real imaginary parts field, are also investigated by experiments.

In this paper, an ultrathin metalens has been proposed based on a holographic metasurface that consists of elongated apertures in 40 nm gold film, which exhibit intriguing properties such as on- and off-axis focusing also can concentrate light into multiple, discrete spots for circularly polarized incident lights. First, the spatial transmission phase distributions designed with arbitrary be obtained by computer-generated holography. Then, continuously encoded subwavelength nanoapertures...

Determining the optical polarization properties of a skin lesion is proposed method to differentiate melanoma from other lesions. We developed an in vivo Stokes polarimetry probe that fires laser known at and measures parameters backscattered light one shot. From these measured parameters, we can calculate degree (DOP). Through testing on rough phantoms, correlation between DOP roughness was identified for both linear circular input polarization, latter which found be more useful. In pilot...

We report a self-accelerating wave packets eigenmode solution of two-dimensional (2D) nonlocal nonlinear Schrödinger equation (NNLSE) with an Airy-beam time-dependence, and present their spatiotemporal profiles. The behaviours such Airy-Laguerre-Gaussian light bullets, as propagated in strongly medium (SNNM), are investigated both analytically numerically. found that the generation, control, manipulation NL bullets affected by radial mode number azimuthal number, well modulation depth. Our...

Traveling wave solutions have been well studied for various nonlinear systems. However, high order physical models, there still exist open problems. Here, travelling to the well-known fifth-order model, Sawada–Kotera equation, are revisited. Abundant structures including soliton molecules, lattice, kink-antikink peak-plateau few-cycle-pulse solitons, double-peaked and triple-peaked solitons unearthed.

With the aid of matrix-based integral transforms called matrix convolution and direct correlation, we provide a simplified expression for space- frequency-domain calculations polarization imaging with partially polarized coherent light. As an example practical interest, formula Stokes imaging, based on generalized parameters, is presented, in which hypermatrix-based transmission cross-coefficient introduced to represent combined effects diffraction aberrations polarization-dependent system...

Introducing scalar and vector densities for a mutual coherence function, we present new conservation law optical of wave fields in the form continuity equation. This provides insights into topological phenomena complex function. Some properties related to newly introduced density, such as circulating current associated with vortex, are investigated both theoretically experimentally first time.

In this article, we demonstrate several optical vortex metalens (OVMs) based on the Pancharatnam–Berry (PB) geometric phase concept utilizing silicon nanobricks. The nanostructured OVMs are designed via coalescing profiles of and plate, which can produce focus beam simultaneously. Through analyzing four single-focal suitable for left circularly polarized (LCP) or right (RCP) incident light respectively, find that topological sign is strongly associated with polarization state light....

In this study, we investigate the kink soliton dynamics for power-law nonlinear systems. Based on F-expansion method, first derive novel solution of Schrödinger equation (NLSE) with third-order dispersion term, dependent nonlinearity linear attenuation and self-steepness term under appropriate parameter settings. With pictorial demonstration, show that obtained not only has features classical NLSE, but also features. The theoretical results presented in our work can be used to guide...

The Stokes parameters, observables in physics, cannot be measured at an ideal point or instant time. This paper is devoted to investigating the statistical properties of integrated parameters polarization speckle partially polarized thermal light. As extension previous study on intensity, spatially and temporally have been applied blurred A general concept referred as numbers degrees freedom for detection has introduced investigate means variances parameters. approximate forms probability...

A novel technique for biological kinematic analysis is proposed that makes use of the pseudophase singularities in a complex signal generated from speckle-like pattern. In addition to information about locations and anisotropic core structures singularities, we also detect spatial cluster phase which serves as unique constellation characterizing mutual position relation between individual singularities. Experimental results vivo measurements swimming fish along with its are presented,...

In this report, we mainly investigate the optical property differences between CsPbBr 3 @SiO 2 quantum dots (QDs) and QDs. The photoluminescence demonstrates that QDs have similar exciton binding energy. Both present bandgaps (PL) linewidth broadening as temperature increases from 10 K to room temperature, which is attributed thermal expansion electron-phonon coupling. fitting results show bandgap coefficient, but weaker interaction. Temperature-dependent time-resolved (TRPL) PL lifetime...

A new technique for fluid mechanics measurement is proposed that makes use of the elliptic anisotropy phase singularities in complex signal representation a speckle-like pattern. Based on formal analogy between polarization field vector wave and gradient signal, Poincaré sphere has been used to characterize serve as unique fingerprints attached seeding particles moving with flow. Experimental results flow velocity acceleration are presented demonstrate validity optical vortex metrology measurement.

Inorganic perovskite CsPbBr₃ is a promising material for the next generation green-wavelength light-emitting devices.