New Nonlinear Intensity Kerr Effect in the Polar Geometry

V. I. Belotelov*^, **, A. P. Pyatakov*^, **, S. A. Eremin***, G. G. Musaev***, and A. K. Zvezdin*^, **

* Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 117942 Russia

** Moscow State University, Vorob’evy gory, Moscow, 119899 Russia

*** Dagestan State University, Makhachkala, 367025 Russia

Received February 4, 2000; in final form, March 9, 2000

Abstract—The problem of the electromagnetic wave reflection on the second optical harmonic from a semi-
infinite optically isotropic magnetic medium is considered for the uniform magnetization direction correspond-
ing to the polar Kerr effect. In the first approximation in magnetization, the method of Green’s tensor functions
is used to derive expressions for the complex amplitudes of the wave fields for the incidence of s- and p-polar-
ized waves (as well as of their superposition) on the medium. It is shown that, in the latter case, the nonlinear
polar Kerr effect is of the intensity type. The dependences of the intensity effect on the angle of incidence of
the inducing wave and on the angle of its polarization, which were obtained in numerical experiments, are pre-
sented. A comparative analysis of the linear and nonlinear intensity Kerr effects is carried out. © 2000 MAIK
“Nauka/Interperiodica”.

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