We describe a convenient approach for generating arbitrary vector beams in 4-f system with spatial light modulator (SLM) and common path interferometric arrangement. A computer-generated hologram is introduced onto SLM performing the beam conversion. Optical realization of variety polarization configurations confirms reliability flexibility our method.

Control of thermal emission underpins fundamental science, as it is related to both heat and infrared electromagnetic wave transport. However, realizing nonvolatile reconfigurable challenging due the inherent complexity or limitation in conventional radiative materials structures. Here, we experimentally demonstrate a optically mid-infrared coding metasurface. By applying laser pulses, emissive patterns are directly encoded into an ultrathin (∼25 nm) Ge2Sb2Te5 layer integrated planar optical...

We predict a new category of optical orbital angular momentum that is associated with the curl polarization and kind vector field radial-variant hybrid states can carry such novel momentum. present scheme for creating desired fields. Optical trapping experiments validate fields, which have no additional phase vortex, exert torques to drive motion trapped isotropic microspheres.

We present an idea based on Poincaré sphere and demonstrate the creation of a new type vector fields, which have hybrid states polarization. Such hybridly polarized fields completely different property from reported scalar fields. The novel are anticipated to result in effects, phenomena, applications.

We present an idea to generate arbitrary space-variant vector beam with structured polarization and phase distributions. The beams are synthesized from the left- right-hand polarized light, each carrying different Both state of can be tailored independently dynamically by a spatial light modulator.

Airy beams are attractive owing to their two intriguing properties--self-bending and nondiffraction--that particularly helpful for optical manipulation of particles. We perform theoretical experimental investigations into the focusing property provide insight trapping ability tightly focused beams. Experiment on tweezers demonstrates that can create multiple traps two-dimensional confining particles, stable exist in vicinity main intensity lobes The pattern be varied with changes cross...

The effect of atmosphere turbulence on light's spatial structure compromises the information capacity photons carrying Orbital Angular Momentum (OAM) in free-space optical (FSO) communications. In this paper, we study two aberration correction methods to mitigate effect. first one is Shack-Hartmann wavefront method, which based Zernike polynomials, and second a phase method specific OAM states. Our numerical results show that for states outperforms Shark-Hartmann although both improve...

We propose and experimentally demonstrate the complete simultaneous modulation of amplitude, phase arbitrary state polarization optical beams. Based on a 4-f system including spatial light modulator (SLM), two orthogonally polarized beams serving as base vector components are produced by computer generated hologram. The complex amplitude orthogonal is realized macro-pixel encoding technique purposely designed for phase-only SLMs. Vector can be created from coaxial superposition This enables...

With environmental concerns increasing, the development of durable, degradable, and reprocessable elastomers is crucial for advancement environmentally friendly wearable electronics. Herein, self-healing, polyimine with a cross-linked network constructed by dynamic imine bonds were synthesized under room temperature flexible strain sensor. Owing to formation microphase separation structure polyetheramine as soft segments adipic acid dihydrazide hard segments, obtained elastomer exhibited...

Since their discovery in the 1990s, vortex beams, known for ability to carry orbital angular momentum (OAM), have found substantial applications optical manipulation and high-dimensional classical quantum information communication. However, inherent diffraction free space, resulting OAM-dependent beam expansion, has constrained utility spatial mode multiplexing communication, fiber optic transmission, particle manipulation. These domains necessitate beams with OAM-independent propagation...

We analyze the point spread function (PSF) of image processing system for radial Hilbert transform and propose a novel spiral phase filter, called Laguerre-Gaussian spatial filter (LGSF). Theoretical analysis real experiments show that LGSF possesses some advantages in comparison with conventional plate (SPP). For example, PSF imaging presents smaller suboscillations than SPP, which allows us to realize achieving high contrast edge enhancement resolution.

We propose an approach for creating optical vortex array (OVA) arranged along arbitrary curvilinear path, based on the coaxial interference of two width-controllable component curves calculated by modified holographic beam shaping technique. The curve beams have different radial dimensions as well phase gradients each such that number singularity in (CA-OVA) is freely tunable demand. Hybrid CA-OVA comprises multiple OVA structures respective also discussed and demonstrated. Furthermore, we...

A pair of vortices, one the multiple exhibits more adjustable parameters and attractive characteristics compared with a single vortex. By introducing vortex on Gaussian beam, we not only realize both longitudinal transverse asymmetrical spin splittings, but also achieve symmetrical ones via purely optical strategy. Namely, symmetries splittings can be controlled flexibly by tunable offering another degree freedom for photonic Hall effect. Based geometric phase theory, physical insights into...

Recognized in the 1990s, vortex beams' ability to carry orbital angular momentum (OAM) has significantly contributed applications optical manipulation and high-dimensional classical quantum information communication. However, inherent diffraction free space results inevitable expansion of beam size divergence contingent upon OAM, limiting applicability areas such as spatial mode multiplexing communication, fiber-optic data transmission, particle manipulation. These domains necessitate beams...

Owing to their robustness against diffraction, Bessel beams (BBs) offer special advantages in various applications. To enhance applicability, we present a method generate self-accelerating zeroth-order BBs along predefined trajectories with tunable <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>z</mml:mi> </mml:math> direction intensity profiles. The character of profiles non-diffracting potentially can attract interest the regimes particle manipulation,...

With the rapid development of flexible electronics and increasing deterioration natural environment, functional environmentally friendly strain sensors have become one frontier research hotspots. Here, we propose a novel strategy to synthesize epoxy elastomer integrating self-healing capability degradability for stretchable sensors. A carboxyl-terminated prepolymer was first synthesized using PEG (PEG-COOH), 2,2′-dithiodibenzoic acid (DTSA), 1,4-butanediol diglycidyl ether (BDDE), then...

Metasurface absorbers (MA) typically exhibit a single type of absorption function due to their regular structures. In this study, we propose an irregular MA structure with octagonal meta-atoms. The presence eight vertices in each meta-atom allows for tunable coordinates and offers multitude degrees freedom terms geometry. As result, the proposed exhibits diverse functionalities, including perfect absorption, multi-peaks high filtering window. To predict geometric parameters based on given...

Photonic orbital angular momentum (OAM) carried by phase-structured vortex light is an important and promising resource for the ever-increasing demand towards high-capacity data information due to its intrinsic unlimited dimensionality. Large superpositions of OAM are easy be produced, but on-demand generation arbitrary spectra such as comb similar a frequency still challenge; especially, multi-OAM modes have not yet been realized at source. Here we report versatile at-source strategy...

We present a theoretical study on the Z-scan characteristics of thin nonlinear optical media with simultaneous two- and three-photon absorption, situation that exists, for example, in polydiacetylenes. With introduction coupling function between we find quasi-analytic expression open aperture traces. make comparison analytic solutions numerical detail, showing they are good agreement. This result allows us to easily identify determine simultaneously absorption coefficients from

Very recently, in a short letter [Appl. Phys. Lett. 91, 111111 (2007)], we outlined some important results of electromagnetic transmission dual-metallic grating structures composed two identical single-metallic gratings with periodic subwavelength slit arrays. Here describe and explain our theoretical study on the propagation property radiation such detail. The manifest that longitudinal interval lateral displacement between strongly influence behavior structures. We discover interesting...