Induced dichroism and gyrotropy in a resonance medium

Ганчеренок Игорь Иванович, P.G. Zhavrid, V. A. Gaisenok

Christian Delsart, J. Keller

Kamran Khan, Bakht Amin Bacha, Aurangzeb Khan +1 more

M. I. Dykman, Vladimir Makarov, A. V. Matveeva

Optical bistability in resonators containing a nonlinear gyrotropic isotropic medium is analyzed by studying the dependence of the bifurcation intensity of the incident radiation on its ellipticity. It is found that if the gyrotropy is weak, this dependence may have symmetry-induced singular points or turning points. The stable radiation states in the resonator formed near a singular or turning point differ in respect of the polarization and are due to the evolution of the polarization instability. Bifurcation curves are plotted for a ring resonator containing a medium with a cubic nonlinearity. The form of these curves changes appreciably as the gyrotropy is increased. The change in the resonator transmission accompanying changes in the gyrotropy is studied.

Vasiliy V. Shepelevich, N. N. Egorov

Levon S. Aslanyan, H. H. Hovakimyan

The problem of the propagation of linearly polarized light in an optically anisotropic medium with spatially modulated gyrotropy is considered. The analysis has been carried out using optical Bloch equations in the approximation of a rotating wave. For clarity, the results are interpreted on the Poincaré sphere. It is demonstrated that under the resonance conditions, i.e., when the spatial frequency of modulation of gyrotropy coincides with the spatial frequency of polarization beats, a resonant increase in the amplitude of these beats is observed.