Two-Sided Endless Optical Polarization Control with 2 x 100 krad/s Tracking Speed

Endless optical polarization control is demonstrated. Polarization transformations before and behind broadband LiNbO3 polarization transformers fluctuate at about 100 krad/s each, >100 times faster than the slower of these two speeds in earlier two-sided polarization controllers. Mean relative intensity loss during a 115 h test of 2 x 100 krad/s tracking was about 0.007, maximum loss was about 0.04.