Coherent backscattering of light from a Faraday medium

Gorodnichev, E. E.; Kondratiev, K. A.; Rogozkin, D. B.

doi:10.1103/physrevb.105.104208

Cited by 6 publications

(1 citation statement)

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“…The effect of coherent backscattering (also sometimes referred to in the literature as the "effect of weak localization") of light in discrete random medium was first described by Watson [56] . It is still under active theoretical and laboratory research [57][58][59][60][61] . To find out how the brightness opposition effect is caused by interference, we examine a discrete medium consisting of scattering particles randomly scattered and exposed to a plane wave.…”

Section: Coherent Backscattering Enhancementmentioning

confidence: 99%

Main Mechanisms of Celestial Bodies Negative Polarization Formation: A Review

Петров

2023

eps

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The scattered light by the vast majority of celestial bodies without atmospheres has a characteristic feature: A negative branch of linear polarization degree at little phase angles. Researchers have proposed many theoretical mechanisms to explain this feature. This review describes the main mechanisms that form a negative branch of linear polarization degree. The results of ground-based observations of the negative branch of the degree of linear polarization of various objects of the solar system are described. Scattering by single particles, shadow effect, coherent backscattering enhancement, and effects of the near field are considered. The review will be useful for all researchers studying the scattering of light by celestial bodies.

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Section: Coherent Backscattering Enhancementmentioning

confidence: 99%

Main Mechanisms of Celestial Bodies Negative Polarization Formation: A Review

Петров

2023

eps

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Weak Localization of Light in a Magneto-active Medium

Gorodnichev

Rogozkin

2023

Jetp Lett.

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The interference contribution to the optical conductance (total transmittance) of a sample of a disordered Faraday medium is calculated. The suppression of wave interference in a magnetic field is shown to be due to helicity-flip scattering events. The magnetic field does not destroy the interference of waves with a given helicity, but suppresses it if the helicity changes along different parts of the wave trajectory. This leads to a decrease in the interference contribution to the conductance with increasing the magnetic field. A similar phenomenon, negative magnetoresistance, is known as a consequence of weak localization of electrons in metals with impurities. It is found that, as the magnetic field increases, the change in the interference correction to the optical conductance tends to a certain limiting value, which depends on the ratio of the transport mean free path to the helicity-flip scattering mean free path. We also discuss the possibility of controlling the transition to the regime of strong “Anderson” localization in the quasi-one-dimensional case by means of the field.

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