Polarization rotator

![Broadband prismatic polarization rotator as described by Duarte.[2]](/uploads/202502/03/Duarte's_polarization_rotator3836.jpg)
A polarization rotator is an optical device that rotates the polarization axis of a linearly polarized light beam by an angle of choice. These rotators are either based on the principle of birefringence or on total internal reflection.