Our retarder modules are mounted on a 360° rotation fixture with a 1.5° resolution. The modules are AR-coated and only contribute an additional insertion loss of 0.1 dB per component. Modules can be removed and replaced with no change in insertion loss. Quarter- and half-wave modules can be added to create polarization controllers, PM fiber launch systems, and other devices.
Features
Compound Plate Design
Crystal Quartz
Air-Spaced, Epoxy-Free Construction for High-Power Applications
Engraved Angle Index
Common Specifications
4 mm Aperture
<1 arcmin Beam Deviation
<λ/10 Wavefront Error
20-10 Scratch Dig
360° Rotation
1.5° Measurement Precision
Zero-Order Retarders
The Zero-Order retarder module is a compound plate design with an epoxy-free, air-spaced beam path that allows safe use of a high-power laser. The device also has excellent wavefront error and minimum beam deviation.
Achromatic Retarders
The Achromatic retarder module is a compound plate design using Crystal Quartz and MgF2. The plates are air-spaced to provide a high-power beam path that has excellent wavefront error and minimum beam deviation.
Achromatic retarders have a flat spectral response that make them ideal for applications that have greater than 20 nm bandwidths.