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We describe how the observed polarization properties of an astronomical object are related to its intrinsic polarization properties and the finite temporal and spectral resolutions of the observing device. Moreover, we discuss the effect…

高能天体物理现象 · 物理学 2022-01-05 Paz Beniamini , Pawan Kumar , Ramesh Narayan

High-contrast scattered light observations have revealed the surface morphology of several dozens of protoplanetary disks at optical and near-infrared wavelengths. Inclined disks offer the opportunity to measure part of the phase function…

地球与行星天体物理 · 物理学 2016-12-07 T. Stolker , C. Dominik , M. Min , A. Garufi , G. D. Mulders , H. Avenhaus

Polarization speckle is a fine granular light pattern having spatially varying random polarization profile. We generate these speckle patterns by using the scattering of Poincar\'e beams, a special class of vector vortex beams, through a…

光学 · 物理学 2017-05-15 Salla Gangi Reddy , Vijay Kumar , Yoko Miyamoto , R. P. Singh

We study the scattering of infrared light by small dielectric core-shell particles taking a sapphire sphere with a CaO core as an example. The extinction efficiency of such a particle shows two intense series of resonances attached,…

介观与纳米尺度物理 · 物理学 2015-05-20 E. Thiessen , F. X. Bronold , R. L. Heinisch , H. Fehske

We use ab-initio electromagnetic simulations to investigate light absorption by rough surfaces in the context of the formation of laser-induced periodic surface structures. Our approach involves modeling a realistic rough surface using a…

光学 · 物理学 2024-05-20 Vladimir Yu. Fedorov , Jean-Philippe Colombier

Imaging an object embedded within a scattering medium requires the correction of complex sample-induced wave distortions. Existing approaches have been designed to resolve them by optimizing signal waves recorded in each 2D image. Here, we…

光学 · 物理学 2022-10-17 Ye-Ryoung Lee , Dong-Young Kim , Yonghyeon Jo , Moonseok Kim , Wonshik Choi

Coherent backscattering (CBS) arises from complex interactions of a coherent beam with randomly positioned particles, which has been typically studied in media with large numbers of scatterers and high opacity. We develop a first-principles…

Studies of diffuse magnetic scattering largely benefit from the use of a multi-detector covering wide scattering angles. Therefore, the different contributions to the diffuse scattering that originate from magnetic, nuclear coherent, and…

强关联电子 · 物理学 2015-05-18 Werner Schweika

We study the effect of surface scattering on transport properties in many-mode conducting channels (electron waveguides). Assuming a strong roughness of the surface profiles, we show that there are two independent control parameters that…

无序系统与神经网络 · 物理学 2009-11-10 F. M. Izrailev , N. M. Makarov , M. Rendon

Motivated by realistic scattering processes of composite systems, we study the dynamics of a two-particle bound system which is scattered at a mirror. The physics of the scattering process will be discussed in the cases when only one…

量子物理 · 物理学 2017-01-04 Friedemann Queisser , William G. Unruh

The scattering of surface plasmons polaritons by a one-dimensional defect of the surface is theoretically studied, by means of both Rayleigh and modal expansions. The considered defects are either relief perturbations or variations in the…

其他凝聚态物理 · 物理学 2007-05-23 A. Yu. Nikitin , F. Lopez-Tejeira , L. Martin-Moreno

In this paper the validity of the diffusion approximation for multiple scattering of classical waves in random medium in different regimes is investigated, with emphasize to weak localization effects. Many principle topics are discussed…

无序系统与神经网络 · 物理学 2007-05-23 Peter Slavov

The scattering of coherent X-rays from dynamically evolving systems is currently becoming experimentally feasible. The scattered beam produces a pattern of bright and dark speckles, which fluctuate almost independently in time and can be…

凝聚态物理 · 物理学 2015-06-25 Gregory Brown , Per Arne Rikvold , Martin Grant

Scattering of light by a random stack of dielectric layers represents a one-dimensional scattering problem, where the scattered field is a three-dimensional vector field. We investigate the dependence of the scattering properties (band gaps…

光学 · 物理学 2010-03-10 O. Fialko , K. Ziegler

Modeling the propagation of light through disordered media is central to understanding and controlling wave transport in diverse optical and mesoscopic applications. Here, we present a random matrix simulation framework for modeling the…

光学 · 物理学 2026-02-24 Niall Byrnes , Sulagna Dutta , Matthew R. Foreman

Random scattering of light in disordered media is an intriguing phenomenon of fundamental relevance to various applications. While techniques such as wavefront shaping and transmission matrix measurements have enabled remarkable progress…

光学 · 物理学 2021-06-09 Pritam Pai , Jeroen Bosch , Matthias Kühmayer , Stefan Rotter , Allard P. Mosk

In this work fluctuations in the electric field of surface plasmon polaritons undergoing random scattering on a rough metallic surface are considered. A rigorous closed form analytic expression is derived describing second order…

光学 · 物理学 2019-06-11 Matthew R. Foreman

Collective coherent light scattering by polarizable particles creates surprisingly strong, long range inter-particle forces originating from interference of the light scattered by different particles. While for monochromatic laser beams…

光学 · 物理学 2016-11-23 Daniela Holzmann , Helmut Ritsch

An approach is presented for the inversion of simulated and experimental in-plane, co-polarized light scattering data in p and s polarization to obtain the normalized surface-height autocorrelation function and the rms-roughness of a…

光学 · 物理学 2024-06-13 I. Simonsen , J. B. Kryvi , A. A. Maradudin

We present a quantitative microscopic theory of the disorder- and phonon-induced coupling between surface and bulk states in topological insulator (TI) films. We find a simple structure for the surface-to-bulk scattering matrix elements and…

强关联电子 · 物理学 2015-01-20 Kush Saha , Ion Garate