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The 10RP52-3B Achromatic Quartz-MgF2 Zero-Order 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 aperture zero-order wave plate has λ/2 retardation over a 1000 to 1600 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.
feature | |
Antireflection Coating | Broadband, multilayer coating |
Average Reflectance | <0.5% |
Clear Aperture | 18 mm |
Construction | Two plates, air spaced |
Damage Threshold | 5 J/cm2 with 10 nsec pulses at 1064 nm, typical |
Diameter | 25.4 mm |
Diameter Tolerance | ±0.13 mm |
Housing | Black anodized aluminum |
Material | Crystal Quartz and MgF2 |
Operating Temperature Range | -20 to 50°C |
Retardation | λ/2 |
Retardation Accuracy | From ±λ/50 to ±λ/100 |
Surface Flatness | λ/2 |
Surface Quality | 40-20 scratch-dig |
Thickness | 9.4 mm |
Transmitted Beam Deviation | ≤1 arc min |
Wavefront Distortion | ≤λ/8 at 632.8 nm over the clear aperture |
Wavelength Range | 1000-1600 nm |