A theory for the nonlinear (with respect to the electric field) Faraday effect has been developed and applied to a simple model. Within the framework of this model, our analysis shows that the ratio of the nonlinear Uerdet constant to the linear Uerdet constant is proportional to the intensity of the incident light and depends on the frequency of light, the excitation energy of the model molecu...

We study laser-induced torques in bcc Fe, hcp Co, and L10 FePt based on first-principles electronic structure calculations and the Keldysh nonequilibrium formalism. We find that the torques have two contributions, one from the inverse Faraday effect (IFE) and one from the optical spin-transfer torque (OSTT). Depending on the ferromagnet at hand and on the quasiparticle broadening the two contri...

Faraday rotators that employ the magneto-optic effect are ubiquitous across several optical device categories: including optical isolators, polarization controllers, and spatial light modulators. However, Faraday rotators are notoriously difficult to fabricate at small scales due to the high magnetic field strengths required to generate significant light polarization vector rotations. In this p...

For magneto-optical(MO) recording media we propose particulate films with magnetic fine particles dispersed in binders. Using effective dielectric tensor Faraday rotation ~ and absorption coefficient -a-are calculated for the particulate films containing Bi-substituted YIG and Co fine particles. The MO figure of merit O'~ of the particulate films exceeds that of continuous magnetic films. This ...

We have studied the nonlinear Faraday effect with intense linear polarized light in an optically thick atomic rubidium vapor. We demonstrate that the polarization rotation rate rotation angle per unit magnetic field, in the limit of low field has a maximum value as the intensity and density are increased. We also show that the optimal sensitivity of an optical magnetometer based on this system ...

Films of Y,R,(Fe, Ni),O,, @=PI, Ce) have been epitaxially grown in situ on G&G%O,, ( 1 1 1 ) substrates by rf sputtering. Faraday rotation of Ce, Ni:YIG film decreased with valence change of Ce ions from 3+ to 4+ induced by Ni substitution. On the other hand, PI, Ni:YIG films showed negative Faraday rotation in the visible which slightly increases in negative sign for Ni substitution. Magneto-o...

We present a study of the Faraday rotation of extragalactic sources lying behind the Large Magellanic Cloud. These data represent the most detailed study yet of magnetic field structures in any external galaxy, and are a demonstration of how magnetic fields in galaxies will best be studied with future instruments.

Narrow, elongated regions of very low polarized intensity – so-called canals – have recently been observed by several authors at decimeter wavelengths in various directions in the Milky Way, but their origin remains enigmatic. We show that the canals arise from depolarization by differential Faraday rotation in the interstellar medium and that they represent level lines of Faraday rotation meas...

The helicity of a photon traversing a magnetized plasma can flip when the B–field along the trajectory slowly reverses. Broderick and Blandford have recently shown that this intriguing effect can profoundly change the usual Faraday effect for radio waves. We study this phenomenon in a formalism analogous to neutrino flavor oscillations: the evolution is governed by a Schrödinger equation for a ...

We employ a long XMM-Newton observation of the core of the Perseus cluster to validate claims of a nonthermal component discovered with Chandra. From a meticulous analysis of our dataset, which includes a detailed treatment of systematic errors, we find the 2-10 keV surface brightness of the non-thermal component to be smaller than about 5×10−16erg cm−2s−1arcsec−2. The most likely explanation f...