Optics and refraction

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   Download

Part 3 book "Principles of physics - A calculus based text" includes content: Faraday's law and inductance, electromagnetic waves, reflection and refraction of light, image formation by mirrors and lenses, wave optics, quantum physics, atomic physics, nuclear physics, particle physics.

406p muasambanhan10 06-04-2024 3 0   Download

Part 2 book "Physics for engineers and scientists (Vol 2)" by authors Hans C. Ohanian and John T. Markert includes content: Electromagnetic induction, alternating current circuits, electromagnetic waves, reflection, refraction, and optics, interference and diffraction, the theory of special relativity.

358p muasambanhan10 06-04-2024 3 0   Download

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   Download

Ebook Comprehensive ophthalmology (4th edition): Part 1 includes contents: Anatomy and development of the eye, diseases of the retina, optics and refraction, diseases of the conjunctiva, diseases of the cornea,... and other contents.

323p longtimenosee03 30-01-2024 4 2   Download

Part 1 book "Parsons’ diseases of the eye" includes content: Anatomy of the eye, physiology of the eye, the physiology of vision, the neurology of vision, elementary optics and optical system of the normal eye, clinical refraction and refractive errors, clinical history taking and interpretation of symptoms, clinical examination, ocular therapeutics and lasers, diseases of the conjunctiva, diseases of the cornea, diseases of the sclera.

535p oursky02 07-08-2023 4 2   Download

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   Download

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   Download

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 14 0   Download

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 6 2   Download

Lecture General Physics 2 - Chapter 22: Reflection and Refraction of Light. After studying this section will help you understand: a brief history of light, the particle nature of light, dual nature of light, geometric optics – using a ray approximation,...

44p diepchilang 26-08-2021 8 1   Download

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   Download

The present work focuses on studying the optical properties of the pristine PEDOT:PSS and the PEDOT:PSS modified with de-ionized water, ethylene glycol and MWCNT. The effect of various additives on the absorption, the refractive index, and the dielectric constant has been inspected. The refractive index dispersion has been analyzed using the single oscillator model developed by Wemple and DiDomenico.

6p tamynhan4 06-09-2020 8 1   Download

The characteristics of photonic crystal fibers (PCFs) with various air hole diameters infiltrated with alcoholic liquids such as ethanol, methanol, propanol and butanol are numerically investigated. Based on the numerical results, we have analyzed and compared in detail the characteristics of these fibers including effective refractive index, effective mode area, dispersion and confinement loss for two sets of parameters {d,Λ} = {1 µm,5 µm} and {1.42 µm, 3.26 µm}, with d the air hole diameter and Λ the lattice constant, respectively.

12p nguyenxuankha_bevandan 14-08-2020 22 4   Download

In this work, we have interested to utilize Fiber Bragg Grating (FBG) for monitoring sound intensity level. Acoustic disturbance could induces train and changing the refractive index of FBG. Therefore, light will interfere for the trough of transmission at one specific wavelength satisfied Bragg’s condition. In our demonstrations FBG sensor was perturbed with sound intensity levels of 60, 80 and 100 dB, the measuring Bragg wavelengths were recorded at1552 nm, 1553 nm and 1555 nm, respectively.

7p viaphrodite2711 14-10-2019 15 1   Download

An optical system to transform the laser Gaussian beam into the Hollow-Gaussian one is proposed and designed. Based on the principles of ray optics, the expressions describing the laser intensity distribution behind optical system and optical transverse gradient force acting on the both low- (refractive index ratio, m

7p viengland2711 23-07-2019 9 0   Download

In this paper, the configuration of BK7- glass photonic crystal fiber with a regular hexagonal lattice with air holes of different diameter and the field distribution of fundamental mode are simulated by Lumica - Mode Solutions. Some optical properties are numerically studied by finite element method and discussed.

6p thithizone 16-07-2019 12 0   Download

The paper proposes a new chromatic-aberration-measuring method for geometric optics of a single converging lens based on the Foucault knife-edge test. An opto-mechatronics measurement system aided by a computer vision was built to automatically determine displaced positions of the knife-edge for discovering chromatic aberration components in the measured lenses.

6p trangcham1896 10-12-2018 33 0   Download

The results show that the stabe region of the optical tweezer depends on the nonlinear coefficient of refractive index. Moreover, the stable region could be brokendown with a critical value of the nonlinear coefficient of refractive index of the surrounding medium irradiated by Gaussian laser pulse described by given parameters as intensity, duration and radius of beam waist.

7p thuyliebe 12-10-2018 38 0   Download

part 2 book “an introduction to x- ray physics, optics, and applications” has contents: compton scattering, photoelectric absorption, absorption spectroscopy, imaging, and detection, refractive and reflective optics, single-crystal and three- dimensional diffraction, diffraction optics,… and other contents.

208p tieu_vu14 15-08-2018 23 1   Download