Refractive index dispersion and related properties in fluorine doped
... for preparation of multimode and single-mode lightguides having fused silica cores. Numerical apertures of 0.2 have been achieved with only 3 wt. % addition of fluorine to the glass.2 Bulk measurement of refractive index dispersion continues to be of importance for accurate characterization of dispe ...
... for preparation of multimode and single-mode lightguides having fused silica cores. Numerical apertures of 0.2 have been achieved with only 3 wt. % addition of fluorine to the glass.2 Bulk measurement of refractive index dispersion continues to be of importance for accurate characterization of dispe ...
Superprism phenomena in planar photonic crystals
... degree in condensed matter and material physics from the University of Louis Pasteur, Strasbourg, France, in 1993, and the Ph.D. degree from the University of St. Andrews, St. Andrews, U.K., in 2000. His research activities are focused on modeling and characterization of light propagation through li ...
... degree in condensed matter and material physics from the University of Louis Pasteur, Strasbourg, France, in 1993, and the Ph.D. degree from the University of St. Andrews, St. Andrews, U.K., in 2000. His research activities are focused on modeling and characterization of light propagation through li ...
In text you refer to OAP mirrors as 2nd etc, In fig, they are labeled
... bending it into an arc-like pattern. Adjustment of this tilt itself proved one of the more effective means of determining the correct tilt angle for the OAP mirrors due to the observable aberrations introduced by even small initial errors. Simulations predict a spot size of 65 microns at the focal ...
... bending it into an arc-like pattern. Adjustment of this tilt itself proved one of the more effective means of determining the correct tilt angle for the OAP mirrors due to the observable aberrations introduced by even small initial errors. Simulations predict a spot size of 65 microns at the focal ...
Wave-front sensing from defocused images by use
... the PDF of photon arrival. Inverting this warping gives us wave-front slope estimates from which the wave-front aberrations can be derived. The total area under the one-dimensional PDF curve remains constant, which models the conservation of flux in the wave-front propagation. The change in the PDF ...
... the PDF of photon arrival. Inverting this warping gives us wave-front slope estimates from which the wave-front aberrations can be derived. The total area under the one-dimensional PDF curve remains constant, which models the conservation of flux in the wave-front propagation. The change in the PDF ...
5377 17paper
... It is desirable to design an aberration test target so that it will sample a lens pupil in the most beneficial way. Since aberrations have unique character in the manner which they influence specific portions of a lens pupil, the test target can be designed so that it is most sensitive to particular ...
... It is desirable to design an aberration test target so that it will sample a lens pupil in the most beneficial way. Since aberrations have unique character in the manner which they influence specific portions of a lens pupil, the test target can be designed so that it is most sensitive to particular ...
Ch30
... For a diverging lens, an incident beam of light parallel to the principal axis is diverged so that the light appears to originate from a single point. The focal length of a lens, whether converging or diverging, is the distance between the center of the lens and its focal point. When the lens is thi ...
... For a diverging lens, an incident beam of light parallel to the principal axis is diverged so that the light appears to originate from a single point. The focal length of a lens, whether converging or diverging, is the distance between the center of the lens and its focal point. When the lens is thi ...
Diffractive read-out of optical disks
... former video disc system. In Section 3 we briefly review the general principles of optical storage systems that have remained more or less unchanged since the start some thirty years ago. An interesting feature of the DVD-system is its standardised radial tracking method that we will treat in some d ...
... former video disc system. In Section 3 we briefly review the general principles of optical storage systems that have remained more or less unchanged since the start some thirty years ago. An interesting feature of the DVD-system is its standardised radial tracking method that we will treat in some d ...
... 1. What is meant by coherence in laser light? A coherent light is pure sine wave and during its transmission it can maintain constant phase difference between any two points in space as well as in a given time interval at any point along the transmission path. Thus it is traveling in a continuous ma ...
Ultrahigh-resolution optical coherence tomography
... Optical coherence tomography (OCT) is an emerging technique for high-resolution, twodimensional in vivo biomedical imaging [1,2]. In OCT, the cross-correlation function of a temporally low-coherence source is used to measure axial scattering from the sample. By scanning the beam across the tissue, a ...
... Optical coherence tomography (OCT) is an emerging technique for high-resolution, twodimensional in vivo biomedical imaging [1,2]. In OCT, the cross-correlation function of a temporally low-coherence source is used to measure axial scattering from the sample. By scanning the beam across the tissue, a ...
A negative permeability material at red light
... artificially engineered metal-dielectric composites that exhibit n' < 0 within a certain range of wavelengths. In addition, a magnetic resonant behavior should be observed in NIMs at this range. The magnetic resonance in any optical NIM is always required to make the real part of the effective refra ...
... artificially engineered metal-dielectric composites that exhibit n' < 0 within a certain range of wavelengths. In addition, a magnetic resonant behavior should be observed in NIMs at this range. The magnetic resonance in any optical NIM is always required to make the real part of the effective refra ...
Department of Physics, Technical University Ostrava 17. listopadu
... the refractive index dispersion n(λ), the interference order m and thus the difference of path lengths between the interfering beams in the air 2L and the overall effective thickness t ef − t can be determined. The interference order m of such a value has to be chosen so that the OPD ∆ M (λ) between ...
... the refractive index dispersion n(λ), the interference order m and thus the difference of path lengths between the interfering beams in the air 2L and the overall effective thickness t ef − t can be determined. The interference order m of such a value has to be chosen so that the OPD ∆ M (λ) between ...
Desert Island themed project - science
... P=1/F f) The focal length of a lens is determined by: ■ the refractive index of the material from which the lens is made, and ■ the curvature of the two surfaces of the lens. g) For a given focal length, the greater the refractive index, the flatter the lens. This means that the lens can be ...
... P=1/F f) The focal length of a lens is determined by: ■ the refractive index of the material from which the lens is made, and ■ the curvature of the two surfaces of the lens. g) For a given focal length, the greater the refractive index, the flatter the lens. This means that the lens can be ...
Fiberoptic Sample Holder (FOSH): Characteristics and Uses APPLICATION NOTE 1056-201
... the bundle to the rod, a slight difference in bundle and rod length, or the reflectivity of the light at each surface interface. They also do not include the effects of cooling on the parameters of the fiberoptic materials. If exact attenuation values are required, the user must determine them for h ...
... the bundle to the rod, a slight difference in bundle and rod length, or the reflectivity of the light at each surface interface. They also do not include the effects of cooling on the parameters of the fiberoptic materials. If exact attenuation values are required, the user must determine them for h ...
C f= s moO moo (8)
... = (pcoo,qwo). Thus a simplified detection scheme can be used, since the output (in 1-D for simplicity) is of the where form u(wcf)lp. = mpip! = (ImpI/p!)exp(j-rn), n = 0 or 1 only. Specifically, we can record the interference of u (co,,wy) and a constant off-axis plane wave exp(jwxxo). This will pro ...
... = (pcoo,qwo). Thus a simplified detection scheme can be used, since the output (in 1-D for simplicity) is of the where form u(wcf)lp. = mpip! = (ImpI/p!)exp(j-rn), n = 0 or 1 only. Specifically, we can record the interference of u (co,,wy) and a constant off-axis plane wave exp(jwxxo). This will pro ...
Ocean optics estimation for absorption, backscattering, and phase
... After the values of and g have been obtained, the bottom albedo and Lambertian fraction ␥ corresponding to a combined Lambertian–specular reflection model can be obtained if data from one of the two 共or additional兲 radiance measurements are from close to the bottom. Our proposed method for deter ...
... After the values of and g have been obtained, the bottom albedo and Lambertian fraction ␥ corresponding to a combined Lambertian–specular reflection model can be obtained if data from one of the two 共or additional兲 radiance measurements are from close to the bottom. Our proposed method for deter ...
Line Degeneracy and Strong Spin-Orbit Coupling of Light with Bulk
... expressed by three tensors, offering a huge parameter space for controlling electromagnetic wave propagation. In this Letter, we show that with judicious engineering of the electromagnetic parameters, a novel type of metamaterials can be designed to exhibit line degeneracy between the two equifreque ...
... expressed by three tensors, offering a huge parameter space for controlling electromagnetic wave propagation. In this Letter, we show that with judicious engineering of the electromagnetic parameters, a novel type of metamaterials can be designed to exhibit line degeneracy between the two equifreque ...
Special Optical Elements
... band and that the dichroic beam-splitter reflect it. Although this can work well if one has a laser line that coincides with the peak of the excitation spectrum, more commonly, the excitation is from a Hg or Xe arc. As such sources are far less bright than lasers, in terms of being able to concentra ...
... band and that the dichroic beam-splitter reflect it. Although this can work well if one has a laser line that coincides with the peak of the excitation spectrum, more commonly, the excitation is from a Hg or Xe arc. As such sources are far less bright than lasers, in terms of being able to concentra ...
Lens induced by stress in ... for high-pressure cells
... by the terms of the Fourier-Bessel expansion. It is most convenient to specify the boundary stress along the lower surface of the window. Then the set of simultaneous equations which result upon substitution of Eq. (3) for Z into the expressions for oij can be split into two sets, each set having ha ...
... by the terms of the Fourier-Bessel expansion. It is most convenient to specify the boundary stress along the lower surface of the window. Then the set of simultaneous equations which result upon substitution of Eq. (3) for Z into the expressions for oij can be split into two sets, each set having ha ...
light is - msmcgartland
... • A fluorescent tube is much more efficient than a regular incandescent light bulb. • About 20% of the electrical energy used in a fluorescent light is converted to visible light, but only 5% of the electrical energy used in an incandescent bulb is converted to visible light. • If you place you ha ...
... • A fluorescent tube is much more efficient than a regular incandescent light bulb. • About 20% of the electrical energy used in a fluorescent light is converted to visible light, but only 5% of the electrical energy used in an incandescent bulb is converted to visible light. • If you place you ha ...
Experiment 24 - School of Physics
... plate is omitted and the beamsplitter is assumed to have zero thickness). An extended source S is used to illuminate the interferometer. M10 is the virtual image of M1 and is located at a distance d from M . The optical path difference (OPD) between the two arms of the interferometer is x = 2d. We a ...
... plate is omitted and the beamsplitter is assumed to have zero thickness). An extended source S is used to illuminate the interferometer. M10 is the virtual image of M1 and is located at a distance d from M . The optical path difference (OPD) between the two arms of the interferometer is x = 2d. We a ...
Improved Theoretical Reflectivities of Extreme Ultraviolet Mirrors
... interfaces between the adjacent layers are perfect i.e. that there is no interfacial interdiffusion and no scattering loss. The optimization methods for thin film multilayered structures are based on the general principles of optimal control theory. In many thin film design methods there is a point ...
... interfaces between the adjacent layers are perfect i.e. that there is no interfacial interdiffusion and no scattering loss. The optimization methods for thin film multilayered structures are based on the general principles of optimal control theory. In many thin film design methods there is a point ...