On the basis of spherical vector wave functions and coordinate rotation theory, the expansion of the fields of an incident Gaussian beam with arbitrary propagation and polarization directions in terms of spherical vector wave functions is investigated, and beam shape coefficients are derived. Using the results of electromagnetic scattering by a uniaxial anisotropic sphere, the analytical expres...

Three methods of obtaining the Mie scattering function are considered and compared . Legendre polynomials and Clebsh-Gordon coefficients are employed and an exact expression for the expansion of the Mie kernel in spherical harmonics is given . 1 . Introduction The absorption and scattering of electromagnetic radiation by a sphere of arbitrary size and refractive index is an exactly solvable pro...

Topological insulators (TIs) show unusual optical responses resulting from a topological magnetoelectric (TME) effect. In this paper, we study theoretically the scattering of electromagnetic waves by circular TI cylinders. In certain configurations, the bulk scattering can be suppressed, leading to strong scattering in the backward direction in both Rayleigh and Mie scattering regimes due to th...

The field solution to the electromagnetic scattering of a plane wave by a uniaxial anisotropic sphere is obtained in terms of a spherical vector wave function expansion form. Using the source-free Maxwell's equations for uniaxial anisotropic media and making the Fourier transform of the field quantities, the electromagnetic fields in the spectral domain in uniaxial anisotropic media are assumed...

New improvements to compute Mie scattering quantities are presented. They are based on a detailed analysis of the various sources of error in Mie computations and on mathematical justifications. The algorithm developed on these improvements proves to be reliable and efficient, without size (x = 2πR/λ) nor refractive index (m = mR − imI) limitations, and the user has a choice to fix in advance t...

T. H. Cheng, X. F. Gu, , and T.Yu 1 State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University, Beijing, China 2 Demonstration Center for Spaceborne Remote Sensing, Chinese National Space Administration, Beijing, China E-mail: [email protected] Abstract: Aerosol particles in the atm...

The Lorenz-Mie light scattering is discussed as a tool allowing living cell characterization. The scattered light carries information about the size, shape, internal structure and refractive index of the cell. The advantages of light scattering methods consist in high speed, nondestructive, sensitive and relatively easy measurements. Light scattering methods are compatible with other methods. I...

We demonstrate that a J0-Bessel-correlated beam that is incident on a homogeneous sphere produces a highly unusual distribution of the scattered field, with the maximum no longer occurring in the forward direction. Such a beam can be easily generated using a spatially incoherent, annular source. Moreover, the direction of maximal scattering can be shifted by changing the spatial coherence lengt...

20 Antibody detection and accurate diagnosis of tropical diseases is essential to help prevent the 21 spread of disease. However, most detection methods lack cost-effectiveness and field-portability, 22 which are essential features for achieving diagnosis in a timely manner in developing countries. 23 peer-reviewed) is the author/funder. All rights reserved. No reuse allowed without permission....

We investigate the optical properties of spherical gold and silver clusters with diameters of 20 nm and larger. The light scattering spectra of individual clusters are measured using dark-field microscopy, thus avoiding inhomogeneous broadening effects. The dipolar plasmon resonances of the clusters are found to have nearly Lorentzian line shapes. With increasing size we observe polaritonic red...