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Frequency dependence of pulsar linear polarization is investigated by simulations of emission and propagation processes. Linearly polarized waves are generated through curvature radiation by relativistic particles streaming along curved…

High Energy Astrophysical Phenomena · Physics 2015-06-23 P. F. Wang , C. Wang , J. L. Han

The influence of the laser pulse temporal shape on the Nonlinear Thomson Scattering on-axis photon spectrum is analyzed in detail. Using the classical description, analytical expressions for the temporal and spectral structure of the…

Plasma Physics · Physics 2016-06-15 Vasily Kharin , Daniel Seipt , Sergey Rykovanov

Instabilities are discussed which take place when a nematic liquid crystal (LC) layer, enclosed between a planar reference plate and a photosensitive substrate, is illuminated with polarized light from the reference side ({\it reverse}…

Soft Condensed Matter · Physics 2014-09-09 T. Tóth-Katona , K. Fodor-Csorba , A. Vajda , I. Jánossy

The fringe pattern that allows geometrical and orbital structure information to be extracted from LIED spectra of symmetric molecules is shown to reflect a symmetry conservation principle. We show that under a field polarization which…

This paper considers the problem of modeling the light polarization that emerges from an astrophysical plasma composed of atoms whose excitation state is significantly influenced by the anisotropy of the incident radiation field. In…

Solar and Stellar Astrophysics · Physics 2011-05-03 Javier Trujillo Bueno

The scattering of a positron by a muon in the presence of a linearly polarized laser field is investigated in the first Born approximation. The theoretical results reveals: 1) at large scattering angle, an amount of multiphoton processes…

Atomic Physics · Physics 2018-03-14 Wen-Yuan Du , Bing-Hong Wang , Shu-Min Li

Modification of surface and volume of sapphire is shown to affect reflected and transmitted light at THz spectral range. Structural modifications were made using ultra-short 230 fs laser pulses at 1030 nm and 257.5 nm wavelengths forming…

Mesoscale and Nanoscale Physics · Physics 2016-05-17 X. W. Wang , G. Seniutinas , A. Balcytis , I. Kasalynas , V. Jakstas , V. Janonis , R. Venckevicius , R. Buividas , D. Appadoo , G. Valusis , S. Juodkazis

The variation of polarization distribution of reflected beam at specular interface and far field caused by spin separation has been studied. Due to the diffraction effect, we find a distinct difference of light polarization at the two…

Optics · Physics 2015-06-05 Yu Jin , Zefang Wang , Yang Lv , Hao Liu , Ruifeng Liu , Pei Zhang , Hongrong Li , Hong Gao , Fuli Li

Nonlinear optical phenomena are generally governed by geometry in matter systems, as they depend on the spatial arrangement of atoms within materials or molecules. Metasurfaces, through precisely designed geometries on a subwavelength…

The alternative to dynamic alignment explanation of experimental results on spatial-asymmetric dissociation of molecules in a laser field is proposed. The concept of geometrical alignment is sufficient for explanation of these results. In…

Optics · Physics 2007-05-23 V. A. Kuz'menko

We report on how the relaxation of patterns prepared on a thin film can be controlled by manipu- lating the symmetry of the initial shape. The validity of a lubrication theory for the capillary-driven relaxation of surface profiles is…

Controlling a nonlinear process like supercontinuum generation (SG) with the polarization-state of laser is an important demonstration of laser selectivity. We show that the threshold for SG and the total amount of supercontinuum generated…

Optics · Physics 2009-11-06 Arvinder S. Sandhu , Sudeep Banerjee , Debabrata Goswami

The polarization properties of a magnetophotonic crystal at the frequencies located in the vicinity of ferromagnetic resonance are studied. The investigations are curried out taking into consideration the fact that the magnitude of material…

Optics · Physics 2010-11-17 Vladimir R. Tuz , Mikhail Yu. Vidil , Sergey L. Prosvirnin

At the International Linear Collider large beam polarization of both the electron and positron beams will enhance the signature of physics due to interactions that are beyond the Standard Model. Here we review our recently obtained results…

High Energy Physics - Phenomenology · Physics 2008-11-26 B. Ananthanarayan

Light-matter coupling is investigated by rotating, by an angle \theta, the polarization of linearly polarized microwaves with respect to the long-axis of GaAs/AlGaAs Hall-bar electron devices. At low microwave power, P, experiments show a…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 A. N. Ramanayaka , R. G. Mani , J. Iñarrea , W. Wegscheider

We explore the laser-induced ionization dynamics of N2 and CO2 molecules subjected to a few-cycle, linearly polarized, 800\,nm laser pulse using effective two-dimensional single active electron time-dependent quantum simulations. We show…

Atomic Physics · Physics 2012-10-02 Michel Peters , Tung Nguyen-Dang , Eric Charron , Arne Keller , Osman Atabek

Underpinning the field of "valleytronics" is the coupling of the helicity of circularly polarized light to the valley degree of freedom, and this remains the only known lightform to exhibit this remarkable effect. Here we show that on…

Optics · Physics 2022-03-29 S. Sharma , P. Elliott , S. Shallcross

We consider electron-atom scattering in a circularly polarized laser field at sufficiently high electron energies, permitting to describe the scattering process by the first order Born approximation. Assuming the radiation field has…

Atomic Physics · Physics 2013-03-07 Aurelia Cionga , Fritz Ehlotzky , Gabriela Zloh

Although coherent light is usually required for the self-organization of regular spatial patterns from optical beams, we show that peculiar light matter interaction can break this evidence. In the traditional method to record laser-induced…

Under quite generic assumptions the general expression is derived for the probability of circularly polarized photon emission from the longitudinally polarized electron and for the probability of pair creation of longitudinally polarized…

High Energy Physics - Phenomenology · Physics 2007-05-23 V. N. Baier , V. M. Katkov