Polarization roators offer 45deg or 90deg rotation at a number of common laser wavelength, the optical axis in a polarization rotator is perpendicular to the polished face of the optic. The result is that the orientation of in put linearly polarized light is rotated as it propagates through the device.
Specifications:

Material: Optical Grade Crystal Quartz Dimension tolerance: +0.0, -0.1mm Wavefront distortion: < l /8@632.8nm Wavelength range: 440-1600nm Retardation accuracy: <5 arc minutes Surface quality: 20/10 scratches and dig Clear aperture: >90% AR coating: R<0.2% at central wavelength Rotation orientation: counter-clockwise

Standard wavelength:532nm, 632.8nm, 1064nm:

P/N#	Diameter(mm)	Rotation	Unit Price
WPR4512	12.7	45°	￡109.5
WPR4515	15.0	45°	￡119.5
WPR4520	20.0	45°	￡150
WPR4525	25.4	45°	￡225
WPR9012	12.7	90°	￡109.5
WPR9015	15.0	90°	￡119.5
WPR9020	20.0	90°	￡155
WPR9025	25.4	90°	￡199.5

BK7 Fresnel Rhomb Prisms

Material: BK7 Grade A optical glass Dimension Tolerance: +0.0,-0.2mm Clear Aperture: >80% Flatness: l /10@ 632.8nm Surface Quality: 20-10 scratch and dig Wavelength Range: 400-2000nm for BK7 Glass Bevel: 0.2mm to 0.5mm Part No. Ratardation A(mm) B(mm) H(mm) Unit Price FFP1101 l /4 35.0 40.0 37.0 ￡156.0 FFP1102 l /2 64.0 40.0 37.0 ￡304.0

Fused Silica Fresnel Rhomb Prisms

Material: UV Grade Fused Silica Dimension Tolerance: +0.0,-0.2mm Clear Aperture: >80% Flatness: l /10 @ 632.8nm Surface Quality: 20-10 scratch and dig Wavelength Range: 200-2000nm for Fused Silica Bevel: 0.2mm to 0.5mm