FAST AUTOMATIC POLARIZATION CONTROL-SYSTEM

We report a fast polarization control system using a lithium niobate electrooptic polarization transformer and a simple electronic feedback circuit. The system produces general elliptical phase retardation at a maximum rate of 6300 rad/s and allows continuous transformations from any general varying input polarization state into any desired output state. We demonstrate automatic stabilization of a rapidly varying polarization state at rates of up to 4900 rad/s.