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# Optics - Science topic

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Publications related to Optics (10,000)
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Article
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Structural coloration takes inspiration from the bright hues found in nature to control the reflection and transmission of light from artificially structured materials. Combining them with active electrical tuning heralds breakthrough applications in optical displays.
Article
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Following publication of this article1, it is noticed that some brackets are missing in the mathematical expressions in Fig. 1. Updated Fig. 1 is provided in this Correction.
Article
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In ptychography, the axial diffraction distance between specimen and detector is extremely important since the precision of this a prior parameter can strongly affect the quality of reconstruction. However, in experiments, applying a simple evaluation model for image quality assessment (IQA) will result in low accuracy with various specimens in the...
Article
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This study analyzes propagation properties of sine beam in uniaxial crystal orthogonal to optical axis. Huygens‐Fresnel integral is solved to find the received field. Influence of source beam parameters, crystal refractive index settings, and propagation distance is analyzed in detail. Our results yield that intensity concentrates on minimum and ma...
Article
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Self-reference interferometry of optical vortices using a Michelson interferometer is investigated in this paper. It is found that the detection of topological charge (TC) for the optical vortices is constrained by some physical conditions. We present these conditions through the theoretical analyses, numerical simulation and experimental results....
Cover Page
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Using Cross-Correlation (CC) of the Time Difference Of Arrival (TDOA) to determine the flow speed of arriving flow structures using the bending of FBG sensors, demonstrating FBG sensors capability for source localization applications.
Conference Paper
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A distance measurement system with <1 µm resolution is demonstrated based on a coherently synthesized two-color EO comb. Air-refractive index self-correction is possible through measuring the optical distances that follow group and phase refractive indices.
Article
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Abnormal optical response of layered hyperbolic metamaterial with plasmonic nanoparticle arrays on top.
Thesis
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Extraordinary optical transmission through periodic magneto-optic structures
Article
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Elektro-eğirme metodu ile sentezlenen metal oksit nanofiberleri üzerine hidrotermal yöntem ile sentezlenen delafosit parçacıkları ağırlıkça farklı oranlarda dekore edilerek heteroyapılı fotokatalizörler elde edilmiştir. Kalay kaynaklı metal oksitin, bakır kaynaklı delafositin ve oluşturdukları heteroyapılı malzemelerin mikroyapısal, morfolojik, opt...
Article
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We study the emergence of supersolid devil's staircases of spin-orbit-coupled bosons loaded in optical lattices. We consider two- and three-dimensional systems of pseudo-spin-1/2 bosons interacting via local spin-dependent interactions. These interactions together with spin-orbit coupling produce length scales that are commensurate to the lattice s...
Article
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The purpose of this study was to evaluate corneal irregular astigmatism of patients with granular and lattice corneal dystrophy (GCD and LCD). 70 GCD, 35 LCD, and 81 control eyes were included. Anterior and posterior corneal topographic data obtained from anterior segment optical coherence tomography were expanded into four components via Fourier h...
Preprint
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Simple, paradigmatic systems are important tools in understanding strongly correlated systems. One such system is the Bose-Hubbard model, which can be realized using atoms in optical lattices with delta-function interactions. We report the first experimental observation of two features of the Bose-Hubbard model: superexchange via virtual molecules...
Chapter
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Wave optics
Preprint
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In this paper, we discussed some Einstein's mistakes we discovered in his Special Theory of Relativity. The most consequential one was his observers failed to respect the laws of optics while conducting his though experiment to establish the foundation for his theory. In this paper, we carefully replicate the experiment, step by step, to find the t...
Article
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The aim of this work was to determine the angle of rotation of the polarization plane of solutions of some S-derivatives of 4-R-5-((((3- (pyridin-4-yl)-1H-1,2,4-triazole-5-yl)thio)methyl))-4H-1,2,4-triazole-3-thiols and the establishment of regularities between the structure of the studied molecules and their optical activity
Preprint
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The thermodynamical properties of systems of bosonic and fermionic simple harmonic oscillators (SHOs) with a given particular dispersion relationship are investigated in this paper. The relevant dispersion relationship is ω 2 = m 2 + i ∆ 2 i sin 2 (k i πa/L). Our systems are of n-dimensions, n being arbitrary, in contrast to the one dimensional cas...
Preprint
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We combine single-pixel imaging and homodyne detection to perform full object recovery (phase and amplitude). Our method does not require any prior information about the object or the illuminating fields. As a demonstration, we reconstruct the optical properties of several semi-transparent objects and find that the reconstructed complex transmissio...
Article
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Full-color emitting materials have always been widely concerned and studied benefiting from their promising application potential in fluorescence imaging and optoelectronic devices. In this paper, four asymmetrically D-A type pyrene-based...
Article
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This study reports for the first time the surface modification of fluorescent nanoparticles derived from geothermal silica precipitate with Escherichia coli (E. coli) antibody. The immobilization of biomolecules on the inorganic surface has been carried out using two different pathways, namely the silanization and hydrosilylation reactions. The for...
Conference Paper
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Inorganic nanotubes (NT), such as WS2NT, have unique properties making them promising candidates for optoelectronic devices. Herein, we performed optical absorption, Raman, and time-domain terahertz spectroscopy of WS2NT in addition to the microscopy measurements to reveal their optoelectronic properties.
Conference Paper
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1D van der Waals heterostructures composed of SWCNT, boron nitride nanotube (BNNT), and molybdenum disulfide nanotube (MoS2 NT) is a novel material which attracts attention due to the unique properties. In particular, by comparing C@BN NT and SWCNT@BNNT@MoS2 NT with MoS2 flakes, we found that 1D van der Waals heterostructures exhibited optical prop...
Preprint
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Adaptive Optics projects at Subaru Telescope span a wide field of capabilities ranging from ground-layer adaptive optics (GLAO) providing partial correction over a 20 arcmin FOV to extreme adaptive optics (ExAO) for exoplanet imaging. We describe in this paper current and upcoming narrow field-of-view capabilities provided by the Subaru Extreme Ada...
Article
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In this paper, we introduce the Lq\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$L_q$$\end{document}-reflector measure as a class of geometric optics measures which is...
Article
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In this paper we are going to propose a novel optical structure that can work as an optical combined half adder/subtractor. The proposed structure has 3 output ports. O1 is the common output port for adder and subtractor which can work as the sum/difference port of the proposed structure. O2 is the carry port of the optical adder and O3 is the borr...
Article
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In this paper, we investigate dynamical properties of two-dimensional vortex solitons in optical materials with a nonlocal focusing nonlinearity. We establish the existence of the vortex solitons via variational method and some new tricks. Our results open up an intriguing perspective for research of stable vortex solitons in other nonlocal nonline...
Article
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Among all kinds of compact cesium beam clocks, the optically detected magnetic-state-selected cesium beam clock (OMCC) combines the advantages of the magnetic state selecting scheme and fluorescence detecting method. This paper presents an overview of the OMCC. Technical issues, noise sources, frequency shifts and improvements of OMCC are reviewed....
Article
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We demonstrate that the usual optical methods can be applied in a simple way to quickly estimate thickness of liquid sheets on sub-millimetre scales. It is shown that an approximate linear relation can be obtained between gap thickness and several of the usual RBG and HSV variables (red and green pixel values in the RBG case and saturation in the H...
Article
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Preprint
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The existence of exotic spin-dependent forces may shine light on new physics beyond the Standard Model. We utilize two iron shielded SmCo5 electron-spin sources and two optically pumped magnetometers to search for exotic long-range spin- and velocity-dependent forces. The orientations of spin sources and magnetometers are optimized such that the ex...
Article
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The features of guided wave propagation along a composite optical structure consisting of graded-index substrate and defocusing nonlinear intensity-dependent cladding are described. The two types of the guided wave propagating in different ranges of the effective refractive index are obtained. The high-order waveguide modes are found. Such modes ar...
Article
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This paper serves as a sequel to previously reported results on cubic‐quartic solitons with complex Ginzburg–Landau equation. This work is with various forms of power law nonlinearity that structures the self‐phase modulation. The enhanced Kudryashov's approach gives the soliton solution. The conservation laws are also identified for the models.
Article
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In this paper, the quasi-normal modes for a Kerr-de Sitter black hole in the geometric optics limit (“photon sphere” quasi-normal modes) for both corotating and counterrotating orbits are studied by calculating the Lyapunov exponent and other relevant parameters. After that, a generalization is made to the case of higher dimensional Kerr-de Sitter...
Article
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The upper limit of sensitivity enhancement in a multipass process was investigated. In the calculation of 3.7×1013 ray-trace analysis, the sensitivity enhancement was increased to 13,510 for the mirror diameter of 75 mm with the mirror diameter. In the experiment, the sensitivity was enhanced by a factor of 1790 ± 160 for an effective mirror diamet...
Preprint
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The linearization of a microwave photonic link based on a dual-parallel Mach-Zehnder modulator is theoretically described and experimentally demonstrated. Up to four different radio frequency tones are considered in the study, which allow us to provide a complete mathematical description of all third-order distortion terms that arise at the photode...
Preprint
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UV wind line variability in OB stars appears to be universal. We review the evidence that the variability is due to large, dense, optically thick structures rooted in or near the photosphere. Using repeated bservations and a simple model we translate observed profile variations into optical depth variations and, consequently, variations in measured...
Experiment Findings
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An examination of wave optics: interference, diffraction and polarization
Conference Paper
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The GLC algorithm allows the construction of efficient transfer lines with defined imaging properties using a minimum number of quadrupole elements. This work describes a generalisation of this algorithm to make it applicable to the use of arbitrary beam optical elements. This includes an extension to longitudinal phase space.
Preprint
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We discuss the semi-classical transverse trapping of waves by means of an inhomogeneous gauge field. In the proposed scheme a temporally-periodic perturbation is shifted in time, the imparted delay being dependent on the transverse direction. We show that, due to the Kapitza effect, an effective potential proportional to the square of the transvers...
Article
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Traditional quantum ghost imaging technique uses three-photon spontaneous parametric down-conversion for producing beams of entangled photons. Two main factors limiting the spatial resolution of ghost imaging techniques are the (usually small) angular range in which the phase-matching condition is satisfied and angular apertures of the optical elem...
Article
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Light–matter interactions are already used to induce new states in condensed-matter systems — such as in Floquet engineering. Combining these ideas with the vectorial properties of structured light promises to further expand the toolbox for optical control of quantum properties of matter.
Conference Paper
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The beamline design of recirculating linacs requires special attention to avoid beam instabilities due to RF wakefields. A proposed high-energy, multi-pass energy recovery demonstration at CEBAF uses a low beam current. Stronger focus-ing at lower energies is necessary to avoid beam breakup (BBU) instabilities, even with this small beam current. Th...
Technical Report
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Status of biological, chemical, and optical properties of the Scotian Shelf and eastern Gulf of Maine marine environment in 2021, based on observations by Fisheries and Oceans Canada's Atlantic Zone Monitoring Program.
Article
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The presence of optical anisotropy in liquid crystals (LCs) has caused these materials to have dual refractive indices: ordinary (no) and extra-ordinary (ne). Many fundamental information about LCs can be found by looking at these refractive indices. In this work, the refractive indices of four mixtures nematic liquid crystal (NLC) have been studie...
Article
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The Q factor in a quasi-BIC-based optical device can approach infinity and has therefore been attracting the attention of many researchers in recent years. However, this mode is barely applied to absorbers since it mainly tunes the radiative loss. The resonant wavelength of quasi-BICs normally couples with the Q factor, and it is difficult to indep...
Article
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2022, том 10, № 1 71 ФИЗИЧЕСКАЯ АППАРАТУРА И ЕЁ ЭЛЕМЕНТЫ УДК 681.7.02, 535.417 PACS: 07.60.Ly Анализ погрешностей метода динамической интерферометрии при контроле локальных поверхностных неоднородностей нанометрового уровня профилей оптических деталей Д. Г. Денисов, М. Н. Устюгова, В. Е. Фролова, Д. А. Машошин, И. И. Гафаров Разработан, научно обос...
Presentation
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We study the optical properties of Bi2Te3 and Bi2Se3 topological insulators (TI) nanostructures of various morphologies and geometries, by examining both Far-field and Near-field responses. We find that both the bulk and surface states contribute to the extremely large optical constants of this family. We demonstrate deep subwavelength resonant str...
Thesis
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This work is a contribution to the study of the structural, elastic, electronic and optical properties of perselenoborates CsBSe3 & TlBSe3. Relevant bibliographic research has allowed us to see that very little is known about the fundamental physical properties of these materials. In response to the lack of studies on this subject, we set ourselves...
Conference Paper
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Preprint
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Control over the shape and polarization of the beam emitted by a laser source is important in applications such as optical communications, optical manipulation and high-resolution optical imaging. In this paper, we present the inverse design of monolithic whispering-gallery nanolasers which emit along their axial direction with a tailored laser bea...