The 10RP32-632.8 True Zero-Order Wave Plate consists of a birefringent polymer film cemented between two high-precision, high efficiency, broadband antireflection coated BK 7 windows. This construction ensures excellent transmitted 632.8 nm wavefront quality and λ/2 retardation, while minimizing beam deviation and surface reflection losses. The assembly is mounted in a 25.4 mm outer diameter black anodized aluminum housing for protection and ease of mounting and has a 17.8 mm clear aperture. The wave plate fast axis marked for alignment reference. Polymer wave plates offer benefits over quartz wave plates such as better angular acceptance and less sensitivity to wavelength change. Polymer wave plates have excellent angular field of view. Retardation changes by less than 1% over a ±12° incidence angle. The polymer material has very low birefringence that is nearly constant with wavelength.
| Model | 10RP34-632.8 |
|---|---|
| Type | Zero-Order Precision Waveplates |
| Wavelength Range | 632.8 nm |
| Clear Aperture | 17.8 mm |
| Material | Grade A BK7 |
| Thickness | 0.25 in. (6.35 mm) |
| Surface Quality | 40-20 scratch-dig |
| Damage Threshold | 500 W/cm2 CW, 0.5 J/cm2 with 10 nsec pulses, @ 1064 nm, 0.3 J/cm2 with 10 nsec pulses at 532 nm, typical |
| Diameter | 1.0 in. (25.4 mm) |
| Diameter Tolerance | ±0.13 mm |
| Housing | Black anodized aluminum |
| Transmitted Beam Deviation | ≤1 arc min |
| Retardation | λ/4 |
| Retardation Accuracy | ±λ/350 |
| Wavefront Distortion | ≤λ/5 at 632.8 nm over the full aperture |
| Acceptance Angle | ±9° |
| Reflectivity per Surface | Broadband, multilayer coating, R <0.5% |
| Cleaning | Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended |
