title: Achromatic polarization rotator.
abstract: What we believe to be a new optical element consisting of a single piece isotropic material with three internally reflecting faces for polarization plane rotation by the angle phi=pi/2 is proposed. The principle of operation is based on the geometrical phase effect, which is different in its origin but produces a similar effect to the circular birefringence. It is shown that the rotator made of polymer as well as silica glasses is not affected by the chromatic dispersion in a visible range.
authors.affiliation: Samsung Electronics Company, Ltd. Research Center, 29, 1-st Brestskaya Street, Moscow 125047, Russia. petrovni@mail.ru
authors.forename: Nikolai I
authors.initials: NI
authors.lastname: Petrov