The 20RP32-532 True Zero-Order Polymer Half Wave Plate consists of a birefringent polymer film cemented between two high-precision, high efficiency, broadband antireflection coated N-BK7 windows. This construction ensures excellent transmitted 532 nm wavefront quality and &lambda,/2 retardation, while minimizing beam deviation and surface reflection losses. The assembly is mounted in a 50.8 mm outer diameter black anodized aluminum housing for protection and ease of mounting and has a 30.5 mm clear aperture. The wave plate fast axis marked for alignment reference. Polymer waveplates 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.
Технические характеристики
- Diameter 50.8 mm
- Wavelength Range 532 nm
- Retardation &lambda,/2
- Retardation Accuracy ±&lambda,/350
- Material Grade A N-BK7
- Clear Aperture 30.5 mm
- Housing Black anodized aluminum
- Acceptance Angle ±9°
- Transmitted Beam Deviation &le,1 arc min
- Wavefront Distortion &le,&lambda,/5 at 632.8 nm over the full aperture
- 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
- Antireflection Coating Broadband, multilayer coating, R
- Surface Quality 40-20 scratch-dig
- Diameter Tolerance ±0.13 mm
- Thickness 12.6 mm
- Operating Temperature Range -20 to 50°C
- Cleaning See How to Clean Optics
