TY - JOUR

T1 - Raman scattering model of the spin noise

AU - KOZLOV, G. G.

AU - FOMIN, A. A.

AU - PETROV, M. Y.

AU - RYZHOV, I. I.

AU - ZAPASSKII, V. S.

N1 - Funding Information: Acknowledgments. The authors are grateful to M. M. Glazov for useful discussions. M. Yu. Petrov acknowledges the Russian Science Foundation for financial support of the experimental part of the work. Funding Information: Funding. Saint Petersburg State University (73031758); Russian Foundation for Basic Research (19-52-12054); Russian Science Foundation (18-72-00078). Publisher Copyright: © 2021 Optical Society of America. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/2/15

Y1 - 2021/2/15

N2 - The mechanism of formation of the polarimetric signal observed in the spin noise spectroscopy (SNS) is analyzed from the viewpoint of the light scattering theory. A rigorous calculation of the polarimetric signal (Faraday rotation or ellipticity) recorded in the SNS is presented in the approximation of single scattering. We show that it is most correctly to consider this noise as a result of scattering of the probe light beam by fluctuating susceptibility of the medium. Fluctuations of the gyrotropic (antisymmetric) part of the susceptibility tensor lead to appearance of the typical for the SNS Faraday rotation noise at the Larmor frequency. At the same time, fluctuations of linear anisotropy of the medium (symmetric part of the susceptibility tensor) give rise to the ellipticity noise of the probe beam spectrally localized at the double Larmor frequency. The results of the theoretical analysis well agree with the experimental data on the ellipticity noise in cesium vapor.

AB - The mechanism of formation of the polarimetric signal observed in the spin noise spectroscopy (SNS) is analyzed from the viewpoint of the light scattering theory. A rigorous calculation of the polarimetric signal (Faraday rotation or ellipticity) recorded in the SNS is presented in the approximation of single scattering. We show that it is most correctly to consider this noise as a result of scattering of the probe light beam by fluctuating susceptibility of the medium. Fluctuations of the gyrotropic (antisymmetric) part of the susceptibility tensor lead to appearance of the typical for the SNS Faraday rotation noise at the Larmor frequency. At the same time, fluctuations of linear anisotropy of the medium (symmetric part of the susceptibility tensor) give rise to the ellipticity noise of the probe beam spectrally localized at the double Larmor frequency. The results of the theoretical analysis well agree with the experimental data on the ellipticity noise in cesium vapor.

UR - http://www.scopus.com/inward/record.url?scp=85100621048&partnerID=8YFLogxK

U2 - 10.1364/OE.415034

DO - 10.1364/OE.415034

M3 - Article

AN - SCOPUS:85100621048

VL - 29

SP - 4770

EP - 4782

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 4

ER -