The 10RP54-2B Achromatic Quartz-MgF2 Quarter Wave Plate consists of two different birefringent crystals: crystalline quartz and magnesium fluoride (MgF2). Enclosed in a 1 inch (25.4 mm) housing. This 18 mm clear aperture zero-order waveplate has &lambda,/4 retardation over a 700 to 1000 nm wavelength range. It has 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. The assembly is mounted in a black anodized aluminum housing for protection and ease of mounting, with the retarder fast axis marked for alignment reference. Because of the air-space design, our Achromatic Quartz-MgF2 Wave Plates have a higher damage threshold than achromatic polymer film wave plates. Achromatic Quartz-MgF2 Wave Plates are also less expensive than achromatic polymer film wave plates.
Технические характеристики
- Wavelength Range 700-1000 nm
- Retardation &lambda,/4
- Retardation Accuracy ±&lambda,/50
- Material Crystal Quartz and MgF2
- Diameter 25.4 mm
- Housing Black anodized aluminum
- Clear Aperture 18 mm
- Construction Two plates, air spaced
- Antireflection Coating Broadband, multilayer coating
- Average Reflectance
- Pulse Damage Threshold 5 J/cm2 with 10 nsec pulses at 1064 nm, typical
- Surface Quality 40-20 scratch-dig
- Surface Flatness &lambda,/2
- Transmitted Beam Deviation ≤1 arc min
- Wavefront Distortion ≤&lambda,/8 at 632.8 nm over the clear aperture
- Diameter Tolerance ±0.13 mm
- Thickness 9.4 mm
- Operating Temperature Range -20 to 50°C
