scholarly journals Deviations from Plane-Wave Mie Scattering and Precise Retrieval of Refractive Index for a Single Spherical Particle in an Optical Cavity

2014 ◽  
Vol 118 (11) ◽  
pp. 2083-2088 ◽  
Author(s):  
Bernard J. Mason ◽  
Jim S. Walker ◽  
Jonathan P. Reid ◽  
Andrew J. Orr-Ewing
Keyword(s):  
Refractive Index ◽  
Plane Wave ◽  
Spherical Particle ◽  
Optical Cavity ◽  
Mie Scattering

Application of the turbidity ratio method in the spherical particle size determination in the range m ∈ and α ∈

1979 ◽  
Vol 44 (7) ◽  
pp. 2064-2078 ◽  
Author(s):  
Blahoslav Sedláček ◽  
Břetislav Verner ◽  
Miroslav Bárta ◽  
Karel Zimmermann
Keyword(s):  
Refractive Index ◽  
Spherical Particle ◽  
Ratio Method ◽  
Refractive Indices ◽  
Relative Refractive Index ◽  
Particle Size Determination ◽  
The Individual ◽  
The Given ◽  
Turbidity Ratio ◽  
Selection Of

Basic scattering functions were used in a novel calculation of the turbidity ratios for particles having the relative refractive index m = 1.001, 1.005 (0.005) 1.315 and the size α = 0.05 (0.05) 6.00 (0.10) 15.00 (0.50) 70.00 (1.00) 100, where α = πL/λ, L is the diameter of the spherical particle, λ = Λ/μ1 is the wavelength of light in a medium with the refractive index μ1 and Λ is the wavelength of light in vacuo. The data are tabulated for the wavelength λ = 546.1/μw = 409.357 nm, where μw is the refractive index of water. A procedure has been suggested how to extend the applicability of Tables to various refractive indices of the medium and to various turbidity ratios τa/τb obtained with the individual pairs of wavelengths λa and λb. The selection of these pairs is bound to the sequence condition λa = λ0χa and λb = λ0χb, in which b-a = δ = 1, 2, 3; a = -2, -1, 0, 1, 2, ..., b = a + δ = -1, 0, 1, 2, ...; λ0 = λa=0 = 326.675 nm; χ = 546.1 : 435.8 = 1.2531 is the quotient of the given sequence.

Mie scattering by a spherical particle in an absorbing medium

2002 ◽  
Vol 41 (18) ◽  
pp. 3545 ◽  
Author(s):  
I. Wayan Sudiarta ◽  
Petr Chýlek
Keyword(s):  
Spherical Particle ◽  
Mie Scattering ◽  
Absorbing Medium

Size determination of spherical voids from the extrema of the Mie scattering intensities

1976 ◽  
Vol 54 (4) ◽  
pp. 349-352
Author(s):  
A. J. Patitsas ◽  
F. Robillard ◽  
B. H. Kaye
Keyword(s):  
Refractive Index ◽  
Forward Direction ◽  
Incident Radiation ◽  
Mie Scattering ◽  
Size Determination ◽  
Size Parameter ◽  
Spherical Void ◽  
Variable Λ ◽  
Spherical Voids

Simple relations have been obtained, by numerical methods, between the diameter D of a spherical void (bubble) in a conducting medium of a given refractive index and the angular positions of the extrema of the Mie scattering intensities from the voids. The extrema are counted from the forward direction. These relations allow the determination of the positions of the extrema for a given diameter, or the reverse, without computational aids. The real part of the refractive index was varied from 1.25 to 15.00 and the imaginary part from 0.0 to 22.50. The size parameter α = πD/λ was varied in all cases from 4.00 to 24.00. The variable λ represents the wavelength of the incident radiation. These findings could thus be related to the scattering of microwaves by bubbles in water. Similar relations have also been obtained regarding the scattering of scalar waves by spherical voids. This corresponds to scattering of Schrödinger waves from complex spherical barrier potentials.

LOW-FREQUENCY ACOUSTIC SCATTERING BY AN INHOMOGENEOUS MEDIUM

2005 ◽  
Vol 15 (10) ◽  
pp. 1459-1468 ◽  
Author(s):  
GEORGE VENKOV
Keyword(s):  
Refractive Index ◽  
Plane Wave ◽  
Inhomogeneous Medium ◽  
Acoustic Waves ◽  
Spherical Wave ◽  
Low Frequency ◽  
Far Field ◽  
Scattering Medium ◽  
Wave Incidence ◽  
Plane Wave Incidence

This paper deals with the scattering of time-harmonic acoustic waves by inhomogeneous medium. We study the problem to recover the near and the far field using a priori information about the refractive index and the support of inhomogeneity. The incident spherical wave is modified in such a way as to recover the plane wave incidence when the source point approaches infinity. Applying the low-frequency expansions, the scattering medium problem is reduced to a sequence of potential problems for the approximation coefficients in the presence of a monopole singularity located at the source of incidence. Complete expansions for the integral representation formula in the near field as well as for the scattering amplitude in the far field are provided. The method is applied to the case of a spherical region of inhomogeneity and a radial dependent refractive index. As the point singularity tends to infinity, the relative results recover the scattering medium problem for plane wave incidence.

High Refractive-Index Microspheres as Optical Cavity Structure

2004 ◽  
Vol 32 (1-3) ◽  
pp. 189-194 ◽  
Author(s):  
Yusuke Arai ◽  
Tetsuji Yano ◽  
Shuichi Shibata
Keyword(s):  
Refractive Index ◽  
Optical Cavity ◽  
High Refractive Index ◽  
Cavity Structure

OPTICAL PROPERTIES OF THE CUBIC AlxGa1-xN ALLOY

2013 ◽  
Vol 27 (17) ◽  
pp. 1350127
Author(s):  
S. HADJI ◽  
S. BERRAH ◽  
H. ABID
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Plane Wave ◽  
Absorption Coefficient ◽  
Local Density Approximation ◽  
Local Density ◽  
Full Potential ◽  
Density Approximation ◽  
Augmented Plane Wave ◽  
Coefficient Versus

In this paper, we present numerical calculations based on the full potential augmented plane wave (FP-LAPW) method within the local density approximation (LDA) to study the optical properties of the ternary alloy Al x Ga 1-x N . The shape of the dielectric function, the refractive index, and the absorption coefficient versus photon energy were presented. From the results, we deduce the possibility of this alloy to be used in the optoelectronic and photovololtaic area.

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