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Refractive index
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Numerical investigation of optical properties in carbon tetrachloride-filled photonic crystal fibers
In this work, we design circular lattice photonic crystal fibers using Lumerical Mode Solution software, its hollow core filled with carbon tetrachloride. Optical properties including effective refractive index, chromatic dispersion, nonlinearity, and fiber loss were investigated numerically in detail based on solving Maxwell's wave equations.
14p
viambani
18-06-2024
2
1
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In this study, we present the experimental evidence demonstrating the utility of electrical double layer (EDL)-induced ion accumulation, using sodium (Na+) ion in water as a model substance, on a negatively charged nanostructured surface, specifically thermally grown silicon dioxide (SiO2). This novel approach, termed Ion Surface Accumulation (ISA), aims to enhance the performance of nanostructured porous silicon (PSi) interferometers in optical refractometric applications.
11p
dianmotminh02
03-05-2024
7
1
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Part 2 book "The feynman lectures on physics (Vol 1)" includes contents: Linear systems and review, optics - the principle of least time; geometrical optics; electromagnetic radiation; interference; diffraction; the origin of the refractive index; radiation damping, light scattering; polarization; relativistic effects in radiation; color vision; mechanisms of seeing; quantum behavior; the relation of wave and particle viewpoints; the kinetic theory of gases; the principles of statistical mechanics; the brownian movement;... and other contents.
533p
muasambanhan08
04-03-2024
3
2
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Part 2 book "The feynman lectures on physics (Vol 2)" includes contents: AC circuits, cavity resonators, waveguides, electrodynamics in relativistic notation, lorentz transformations of the fields, field energy and field momentum, electromagnetic mass, the motion of charges in electric and magnetic fields, the internal geometry of crystals, tensors, refractive index of dense materials, reflection from surfaces, the magnetism of matter,... And other contents.
294p
muasambanhan08
04-03-2024
4
1
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Part 2 book "Physics project lab" includes content: Sound from gas bubbles in a liquid, shape and path of air bubbles in a liquid, ink diffusion in water, refractive index gradients, light scattering by surface ripples, diffraction of light by ultrasonic waves in liquids, the circular hydraulic jump, vortex physics, plastic bottle oscillator, salt water oscillator,... and otehr contents
158p
muasambanhan02
18-12-2023
12
3
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In this work, we study the generation of a negative refractive index based on electromagnetically induced transparency (EIT) in a Rb four-level N-type atomic gas medium. We derive analytic expressions for the relative permittivity and relative permeability of the medium according to the parameters of the probe, pump, and signal laser fields.
14p
viberkshire
09-08-2023
9
4
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Characteristics of As2Se3 photonic crystal fibers (PCFs) with a solid-core and small-core diameter are numerically investigated in the long-wavelength range (from 2 to 10 μm). The flat dispersion feature, high nonlinearity, and small confinement loss of the proposed photonic crystal fiber structure make it suitable for supercontinuum.
10p
vispiderman
15-06-2023
4
2
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In an Erbium-doped glass laser resonator, parasitic light oscillations (yielding a lowering of the output laser beam power) may be avoided by deposition of well-adapted antireflection coatings on the edges of the active glass medium.
8p
vispiderman
15-06-2023
5
2
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This work reports the optical properties of surface plasmon resonance (SPR) based on the metal-insulator-metal (MIM) structure towards a refractive index sensor. The MIM-SPR structure operating near infrared region consists of lateral periodicity of subwavelength gold patterns placed on a stack of thin silica spacer and silver film (acting as a reflector) on a silicon substrate.
10p
vispiderman
15-06-2023
8
3
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This proposed sensor is used in wavelength interrogation method, in which the D-shaped FBG is applied as a refractive index (RI) sensing probe and a mirror to select mode of laser. The sensor is run by monitoring the wavelength shift of selected laser mode.
10p
vispiderman
15-06-2023
7
2
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To evaluate the results of Phakic ICL surgery after one month at Saigon Can Tho Eye Hospital. Subjects and methods: A retrospective descriptive study evaluated onemonth results in 45 eyes of 23 patients undergoing Phakic ICL surgery with Visian Staar Lens of Staar Surgical Company, from July 2020 to December 2021.
8p
vicaptainmarvel
21-04-2023
9
2
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In the present work, triacylglycerol and fatty acid compositions of Impatiens balsamina L. and Impatiens walleriana Hook.f. seed oils were determined using reverse phase high performance liquid chromatography with both refractive index and spectrophotometric detections. The presence of conjugated octadecatetraenoic moieties was confirmed by UV and IR spectroscopy. Triacylglycerol (TAG) compositions were performed using an incremental approach and confirmed by the results of MS and electronic spectra.
15p
lyhuyenthu
31-01-2023
5
2
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This study was aimed to evaluate the physicochemical properties and chemical profile of seeds oil obtained from new seven sunflower (Helianthus annuus L.) lines as well as their antioxidant and enzyme inhibition activity. The seeds powder was extracted by maceration in n-hexane. The oil content of the seven lines was ranged from 20.04% to 36.65% and was either yellow or pale yellow in color. No significant variations were observed on the refractive index (1.46 unit) of the oil.
11p
lyhuyenthu
31-01-2023
5
2
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This work studies the linear, the third-order nonlinear, and the total optical absorption coefficients (OACs) and the refractive index changes (RICs) caused by both intra-and inter-band transitions in the WSe2 monolayer.
9p
meyerowitz
25-12-2021
13
0
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Lecture Physical chemistry: Physical properties of drug molecules provide students with knowledge about dielectric constant, induced polarization, dipole moment, refractive index, molar refraction, optical rotatory dispersion,...
39p
bachnhuocdong
23-12-2021
16
0
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In this work, we study the linear, the third-order nonlinear, and the total refractive index changes (RICs) caused by both intra- and inter-band transitions in monolayer MoSe2 in the presence of a magnetic field by using the compact density matrix approach. The results show that RICs display the blue-shift behavior with the increase of the magnetic field. The Zeeman fields do not affect the peak positions but reduce slightly peak intensities.
6p
viwilliamleiding
10-12-2021
10
1
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In the present investigation, some novel S-(5-aryl-1,3,4-oxadiazol-2-yl)2-chloroethanethioate (3a–3e) derivatives were synthesized and their impact on optical properties was studied. They have also been characterized by elemental analysis and various spectroscopic methods including FTIR, 1H NMR, 13C NMR, and UV-Vis techniques. The nonlinear refractive indexes of 3a–3e were also measured in dichloromethane via Z-scan method using a continuous wave diode-pumped laser at 532 nm wavelength. The nonlinear refractive coefficient of compounds was obtained from 1011 m2/W order.
9p
tudichquannguyet
29-11-2021
5
1
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The specific phase and group refractive indexes concerning the specific phase and group velocities of single and packet electromagnetic waves contain all interactions between the electromagnetic waves and the propagating medium
9p
viaespa2711
31-07-2021
17
2
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In this work, a model is delivered, which highlights a simple mathematic relationship between the refractive index of an optical material and its transmittance spectrum measured by Fourier Transform Infrared Spectroscopy. Such model allows determining the refractive index of ceramics fabricated by hot-pressing of MgF2 nanoparticles. The reliability of this method has been verified on a silicon wafer taken as a reference (< 0.5%, discrepancy with data from literature on Si). Our approach can be applied to a variety of promising novel optical materials being developed.
9p
cothumenhmong11
05-05-2021
25
1
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Analyzing the three-dimensional (3D) refractive index distribution of a single cell makes it possible to describe and characterize its inner structure in a marker-free manner. A dense, full-view tomographic data set is a set of images of a cell acquired for multiple rotational positions, densely distributed from 0 to 360 degrees.
9p
vioklahoma2711
19-11-2020
7
3
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