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Polarizers


λ/4-retarders convert linearly polarized beams to circular and circular to linear. λ/2-retarders convert polarization direction arbitrarily.
Quartz waveplates are zero-order retardation plates composed of pairs of optically contacted crystalline quartz plates mounted on aluminum frames.

OSE-WPM

Mica waveplates are zero-order retardation plates designed for a wavelength of 550 nm and effective from 400 - 700 nm.

This optical retardation can be given without the wavelength dependence for all visible regions.