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We present an updated version of POLARIS, a well established code designated for dust polarisation and line radiative transfer (RT) in arbitrary astrophysical environments. We extend the already available capabilities with a synchrotron…

Astrophysics of Galaxies · Physics 2019-11-06 Stefan Reissl , Robert Brauer , Ralf S. Klessen , Eric W. Pellegrini

As radio polarised emission from astrophysical objects traverse through foreground magnetised plasma, the physical conditions along the lines of sight are encrypted in the form of Rotation Measure (RM). We performed broadband…

Astrophysics of Galaxies · Physics 2017-10-10 Yik Ki Ma , Sui Ann Mao , Aritra Basu , Carl Heiles , Jennifer West

Polarization measurements provide strong constraints on models for emission from rotation-powered pulsars. We present multiwavelength polarization predictions showing that measurements over a range of frequencies can be particularly…

High Energy Astrophysical Phenomena · Physics 2017-05-24 Alice K. Harding , Constantinos Kalapotharakos

We demonstrate a novel algorithmic approach for the second-harmonic-generation (SHG) frequency-resolved optical gating (FROG) ultrashort-pulse-measurement technique that always converges and, for complex pulses, is also much faster. It…

Optics · Physics 2019-02-20 Rana Jafari , Travis Jones , Rick Trebino

Symmetry governs the selection rules of light-matter interactions in crystalline materials, making symmetry manipulation a powerful tool for tuning their optical properties. Here, we demonstrate that the hot-electron injection from a…

Optics · Physics 2025-04-02 Zhizi Guan , Zhiwei Peng , David J. Srolovitz , Jacob Khurgin , Dangyuan Lei

Nonreciprocal devices that allow the light propagation in only one direction are indispensable in photonic circuits and emerging quantum technologies. Contemporary optical isolators and circulators, however, require large size or strong…

Materials Science · Physics 2021-10-12 Shingo Toyoda , Manfred Fiebig , Taka-hisa Arima , Yoshinori Tokura , Naoki Ogawa

Studying materials under extreme pressure in diamond anvil cells (DACs) is key to discovering new states of matter, yet no method currently allows the direct measurement of the electronic structure in this environment. Solid-state high…

This research will examine the computational methods to calculate the nonlinear optical process of second harmonic generation (SHG) that will be hypothesized to be present during lithium ion insertion into silicon nanowires. First it will…

Optics · Physics 2021-10-19 Donald C. Boone

The orientation of the tilted magnetic anisotropy has crucial importance in many spintronic devices. However, it is very challenging to determine it especially in very small structures produced by lithography. Here, we propose a new…

Mesoscale and Nanoscale Physics · Physics 2021-03-22 Hasan Piskin , Erdem Demirci , Mustafa Ozturk , Numan Akdogan

We present broadband polarimetric observations of a sample of high Faraday rotation measure (RM) AGN using the VLA telescope from 1 to 2 GHz, and 4 to 12 GHz. The sample (14 sources) consists of compact sources (linear resolution smaller…

We have developed a numerical method for calculating the second harmonic generation (SHG) generated by an anisotropic material whose optical properties present an arbitrary modulation in one dimension. The method is based on the Berreman…

Optics · Physics 2023-05-31 J. Ortega , C. L. Folcia , J. Etxebarria

We experimentally explore the fingerprint of the microscopic electron dynamics in second-order harmonic generation (SHG). It is shown that the interbond electron hopping induces a novel source of nonlinear polarization and plays an…

Second-harmonic generation (SHG) is a quintessential probe of inversion symmetry breaking in condensed matter. While perturbative $\chi^{(2)}$ processes are well-documented, the nonperturbative regime under intense driving remains largely…

Strongly Correlated Electrons · Physics 2026-04-08 Keisuke Kitayama , Masao Ogata

A majority of experimental disciplines face the challenge of exploring large and high-dimensional parameter spaces in search of new scientific discoveries. Materials science is no exception; the wide variety of synthesis, processing, and…

We study the interferometric observation of intensity and polarization anisotropies of a stochastic gravitational wave background (SGWB). We show that the observed correlated data is defined in the group manifold of the three-dimensional…

General Relativity and Quantum Cosmology · Physics 2021-03-25 Yu-Kuang Chu , Guo-Chin Liu , Kin-Wang Ng

We present a method for a precise determination of magnetic anisotropy and anisotropy of quadratic magneto-optical response of thin films of ferromagnetic and ferrimagnetic materials. The method is based on measurements of a magneto-optical…

Two-dimensional (2D) graphene and graphene-related materials (GRMs) show great promise for future electronic devices. Nevertheless, GRMs result distinct properties under the influence of the substrate that serves as support through uneven…

We present high resolution two-photon excitation microscopy studies combining two-photon fluorescence (TPF) and second harmonic generation (SHG) in order to probe orientational distributions of molecular ensembles at room temperature. A…

Soft Condensed Matter · Physics 2007-05-23 Veronique Le Floc'h , Sophie Brasselet , Jean-Francois Roch , Joseph Zyss

Scanning electron microscopy with polarization analysis is a powerful lab-based magnetic imaging technique offering parallel imaging of multiple magnetization components and a very high spatial resolution. However, one drawback of the…

Instrumentation and Detectors · Physics 2018-08-22 Daniel Schönke , Andreas Oelsner , Pascal Krautscheid , Robert M. Reeve , Mathias Kläui

We have studied on optical second harmonic generations (SHGs) from atomically thin MoTe2 flakes with 2H and 1T' phases. From 2H-MoTe2 samples with odd (even) numbers of layers, strong (negligible) SHGs are observed due to the…

Optics · Physics 2018-05-25 Yu Song , Ruijuan Tian , Jiulong Yang , Rui Yin , Jianlin Zhao , Xuetao Gan
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