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Nanoantenna is one of the most important optical components for light harvesting. In this study, we show experimental evidence of interactions between coupled nanowires by comparing the fluorescence properties of quantum dots on both…

The effect of an intense external linear polarized radiation field on the angular distributions and polarization states of the photons emitted during the radiative recombination is investigated. It is predicted, on symmetry grounds, and…

Other Condensed Matter · Physics 2009-11-13 Saverio Bivona , Giovanni Bonanno , Riccardo Burlon , Claudio Leone

We investigate the polarization properties of emission associated with the magnetic dipole and electric dipole transitions of europium(III) coupled to an anisotropic dielectric metasurface with polarization-engineered electric and magnetic…

Color centers in wide-bandgap semiconductors are a promising class of solid-state quantum light source, many of which operate at room temperature. We examine a family of color centers in aluminum nitride, which emits close to 620 nm. We…

Applied Physics · Physics 2023-10-11 J. K. Cannon , S. G. Bishop , J. P. Hadden , H. B. Yagci , A. J. Bennett

The polarization of x-rays plays an outstanding role in experimental techniques such as non-resonant magnetic x-ray scattering and resonant x-ray scattering of magnetic and multipolar order. Different instrumental methods applied to…

Strongly Correlated Electrons · Physics 2014-09-24 C. Detlefs , M. Sanchez del Rio , C. Mazzoli

We study theoretical X-ray light curves and polarization properties of accretion-powered millisecond pulsars. We assume that the radiation is produced in two antipodal spots at the neutron star surface which are associated with the magnetic…

Astrophysics · Physics 2009-11-10 Kerttu Viironen , Juri Poutanen

The optical polarimetry technique is used to explore molecular ordering of nematic liquid crystals 5FPFFPP3 embedded in parallel cylindrical channels of alumina membranes with pore walls covered by a SE-1211 polymer film enhancing normal…

Soft Condensed Matter · Physics 2018-06-19 A. V. Kityk , P. Huber , K. Sentker , A. Andrushchak , P. Kula , W. Piecek , R. Wielgosz , O. Kityk , P. Goering , M. Lelonek

We study the direction- and wavelength-dependent polarization anisotropy in light scattering at the air-photonic crystal interface as a function of angle of incidence for TE and TM polarized light. This is done using optical reflectivity…

Optics · Physics 2016-07-06 Priya , Rajesh V. Nair

Electronic excitations in metallic nanoparticles in the optical regime that have been of great importance in surface enhanced spectroscopy and emerging applications of molecular plasmonics, due to control and confinement of electromagnetic…

Mesoscale and Nanoscale Physics · Physics 2015-10-28 Marouane Salhi , Ali Passian , George Siopsis

We discuss studies of polarization in astrophysical masers with particular emphasis on the case where the Zeeman splitting is small compared to the Doppler profile, resulting in a blend of the transitions between magnetic substates. A…

Instrumentation and Methods for Astrophysics · Physics 2023-02-08 Taylor L. Tobin , Malcolm D. Gray , Athol J. Kemball

Optically-induced nuclear spin polarization in a fluorine-doped ZnSe epilayer is studied by time-resolved Kerr rotation using resonant excitation of donor-bound excitons. Excitation with helicity-modulated laser pulses results in a…

Mesoscale and Nanoscale Physics · Physics 2016-01-06 F. Heisterkamp , A. Greilich , E. A. Zhukov , E. Kirstein , T. Kazimierczuk , V. L. Korenev , I. A. Yugova , D. R. Yakovlev , A. Pawlis , M. Bayer

We propose an enantioselective scheme to sort homogeneous chiral particles using optical tweezers. For a certain range of material parameters, we show that a highly focused circularly-polarized laser beam traps particles of a specific…

Optics · Physics 2023-07-19 R. Ali , F. A. Pinheiro , R. S. Dutra , F. S. S. Rosa , P. A. Maia Neto

A statistical model of the polarization of pulsar radio emission is used to derive the general statistics of a polarization vector's orientation angles. The theoretical distributions are compared with orientation angle histograms computed…

Astrophysics · Physics 2009-11-11 Mark M. McKinnon

The maps of intensity and polarization of the radio synchrotron emission from shell-type supernova remnants (SNRs) contain a considerable amount of information, although of not easy interpretation. With the aim of deriving constraints on…

High Energy Astrophysical Phenomena · Physics 2016-03-23 Rino Bandiera , Oleh Petruk

Thomson scattered photospheric light is the dominant constituent of the lower solar corona's spectral continuum viewed off-limb at optical wavelengths. Known as the K-corona, it is also linearly polarized. We investigate the possibility of…

Solar and Stellar Astrophysics · Physics 2022-07-20 Thomas A. Schad , Sarah A. Jaeggli , Gabriel I Dima

Excited state angular momentum alignment -- orientation conversion for atoms with hyperfine structure in presence of an external magnetic field is investigated. Transversal orientation in these conditions is reported for the first time.…

Atomic Physics · Physics 2009-11-06 Janis Alnis , Marcis Auzinsh

In recent years, there has been a renewed interest in complex coacervation, driven by concerted efforts to offer novel experimental and theoretical insights into electrostatic charge-induced association. While previous studies have…

Soft Condensed Matter · Physics 2024-10-30 Letícia Vitorazi , Jean-François Berret

We report a quantitative analysis of the wavevector diagram emitted by nonlinear photoluminescence generated by a tightly focused pulsed laser beam and distributed along Au nanowire via the mediation of surface plasmon polaritions. The…

We employ our new model for the polarised emission of accreting X-ray pulsars to describe the emission from the luminous X-ray pulsar Hercules X-1. In contrast with previous works, our model predicts the polarisation parameters…

High Energy Astrophysical Phenomena · Physics 2020-11-11 Ilaria Caiazzo , Jeremy Heyl

By combining density functional theory and nonequilibrium Green's function, we study the electronic and transport properties of monolayer black phosphorus nanoribbons (PNRs). First, we investigate the band-gap of PNRs and its modulation by…

Mesoscale and Nanoscale Physics · Physics 2016-11-25 Qingyun Wu , Lei Shen , Ming Yang , Zhigao Huang , Yuan Ping Feng