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Our New Quartz Rotators take advantage of the optical activity in quartz by orienting the optic axis perpendicular to the face of the rotator plate. This results in a rotation of the state of polarization of the input beam by a fixed amount (unlike half waveplates whose output rotation is dependent on rotation of the fast axis relative to the input polarization).
The amount of rotation is determined by the wavelength and the thickness of the rotator plate. We offer 45° and 90° rotators for standard laser wavelengths.
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