Large Aperture Retarder
- Outer diameter up to 6 inches
- Clear aperture > 90%
- Custom size, retardance and wavelength range available
- Spatial uniformity of less than 2% across clear aperture
- Various materials available: (polymer, quartz, sapphire, magnesium fluoride and liquid crystal)
For many astronomical, aerospace, and defense projects, large aperture retarders are required. Meadowlark Optics has over thirty-five years of retarder manufacturing expertise and is able to manufacture from a wide variety of materials to facilitate high or low power applications.
Waveplates up to 150 mm diameter are available. Some materials allow retarders to be used over different wavelengths from the ultraviolet, through the visible and into the near infrared.
- RAPtor Applied Polymer Retarders
- Large 6” Outer Diameter
- Less than 15mm Thickness
- True Zero-Order
- Broad Wavelength ranges
Meadowlark Optics uses proprietary methods to ensure the best spatial uniformity of its polymer and crystalline retarders. These retarders have a spatial uniformity of better than two percent across the clear aperture and with the correct substrates, can have a wavefront distortion that is on par with Meadowlark Optics’ Precision Retarders.
Meadowlark Optic’s liquid crystal variable retarders can also be built with large clear apertures. Please contact your Meadowlark Optics Sales Engineer for assistance and a custom quote.