Quantum effects in the field of a nonmonochromatic electromagnetic wave

B. A. Veklenko

V. Yu. Finkel'Shteǐn

NILOY KUMAR DUTTA

We discuss the theory of Raman-induced Kerr effect (RIKE) when excited by nonmonochromatic waves. The maxima and minima of the lineshape are shifted farther apart when pumped by linearly polarized nonmonochromatic waves. The shift varies linearly with the sum of the pump and probe linewidths. Certain other features are also predicted in agreement with experimental results.

V. A. Liulka

B. Glushko, V. O. Chaltykyan

A theoretical analysis is made of the nonlinear (in respect of the radiation intensity) rotation of the plane of polarization occuring in an atomic medium subjected to a static magnetic field near one-photon (two-level atoms) and two-photon (three-level atoms) resonances. A study is also made of the influence of a strong monochromatic pump wave on the propagation of a weak nonmonochromatic wave. The wave functions and quasienergies are calculated for a three-level system in static magnetic and monochromatic electromagnetic fields near a two-photon resonance. It is shown that the Verdet constant and the refractive index of such a system depend on the magnitude and relative sign of the frequency detuning from resonance. Proximity to a two-photon resonance destroys the polarizability of a medium for either sign of the detuning.

Zbigniew Haba