Polarization rotators

Polarization Rotators rotate polarization at a fixed angle and represent a good alternative to retardation waveplates for narrow-waveband lasers.

The rotation of polarization is caused by a property called optical activity, which is natural to quartz crystal and other enantiomorphous materials. There are “right-handed” and “left-handed” quartz that  rotates the polarization clockwise or counterclockwise, respectively.

As the rotators are c-cut, the rotation of polarization occurs independently of the component’s rotation around the optical axis, thus component is alignment-insensitive and the only requirement is that  the incident beam must be perpendicular to rotator’s aperture.

Altechna offers rotators with fixed polarization rotation angles of 45° or 90°, including antireflection coatings for the designed wavelength. For more convenient use, all rotators are mounted in black       anodized aluminum mounts.

Features:

• No need for special adjustment
• Coated with antireflection coatings
• Rotates polarization at a fixed angle
• Custom rotation angle available
• Counter-clockwise rotation by request
• Rotators without mounting by request
• Rotators for custom wavelengths are available

Typical Items for Polarization Rotators