Superachromatic Waveplates are constructed by combining three achromatic double plates, with the relative orientation of their optical axes optimized to minimize residual retardation deviation. This design allows for outstanding performance over an extended spectral range, significantly surpassing that of standard achromatic waveplates. We offer models optimized for the 310–1100 nm and 600–2700 nm ranges.
‍

The effective principal axes exhibit a slight spectral variation, similar to the retardation itself, ensuring consistent performance over the specified wavelength range. Each plate is cemented, and the outer surfaces are treated with a single-layer MgF₂ antireflection coating to reduce reflection losses.
‍

In addition to our standard stock of superachromatic waveplates, we also offer custom accessories and tailored versions, as outlined in the product details section. All low order waveplates are housed in durable cylindrical mounts for easy integration and handling, but unmounted versions are also available as a custom option. All waveplate mounts can also be ordered customized with SM1 or SM2 outer threading.