The influence of Kerr field and Doppler broadening on magneto optical and image state rotation

We examine the magneto-optical and image state rotation (MOR) of left and right circularly plane-polarized light pulse through a double Lambda-type four-level configuration of Rubidium atom via Kerr field and Doppler broadening in the presence of the static magnetic field. The medium's behavior is different for both orthogonal components of the probe beam, causing linear dichroism or circular birefringence. Enhanced and lossless MOR is obtained by applying the control field through a closed-loop birefringent system. We observe a magnified angle of rotation of probe field in Doppler broadened medium. It is shown that due to the Kerr nonlinearity, the rotation angle of the probe beam is generated and modified through cold and Doppler broadened medium. Moreover, almost complete polarization rotation is observed for a particular set of parameters. The MOR can be effectively utilized in designing new TM/TE polarization modes, optical communication, polarization spectroscopy, lider with backscattering depolarization, precision measurements, and magnetometry.

Automated summary

This study examines the magneto-optical and image state rotation of left and right circularly plane-polarized light pulse through a double Lambda-type four-level configuration of Rubidium atom using Kerr field and Doppler broadening. The experiment shows that enhanced and lossless rotation can be achieved by applying a control field, and almost complete polarization rotation can be observed under specific conditions.