Achromatic Waveplate, Quarter-Wave, Quartz-MgF₂, 25.4 mm Diameter, 400-700 nm

Achromatic Quartz-MgF₂ Zero-Order Wave Plates provide a much higher degree of retardation accuracy than regular zero-order quartz wave plates. Achromatic Quartz-MgF₂ Wave Plates operate over a broad wavelength range, compared to the single wavelength performance of zero-order quartz wave plates. For specific retardation accuracy performance, please visit the 10RP54-1B, 10RP54-2B or 10RP54-3B product pages.

The assembly is mounted in a 25.4 mm or black anodized aluminum housing for protection and ease of mounting, with the retarder fast axis marked for alignment reference. The standard 25.4 mm outer diameter is convenient for mounting into Newport rotary mounts. The 18 mm large clear aperture makes it ideal for ultrafast applications.

Achromatic Quartz-MgF₂ Zero-Order Wave Plates consist of crystalline quartz and magnesium fluoride (MgF₂) crystals, each with a highly efficient broadband antireflection coating, in an air-spaced design. This construction ensures excellent transmitted wavefront quality, while minimizing beam deviation and surface reflection losses. Because of the air-space design, our Achromatic Quartz-MgF₂ Wave Plates provide a pulse damage threshold of 5 J/cm² with 10 nsec pulses at 1064 nm, which is much higher than that of achromatic polymer film wave plates.