Achromatic Zero-Order Wave Plates
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Catalog excerpts

O p t i c s 585 Email: [email protected] • Web: newport.com WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Achromatic Zero-Order Wave Plates Our achromatic zero-order wave plates consist of a polymer film stack laminated between two high-precision AR coated BK 7 windows and are designed to operate with a high degree of retardation accuracy over a broad wavelength range. Achromatic polymer wave plates have better angular acceptance and less sensitivity to wavelength change than achromatic quartz-MgF2 wave plates. • Superior broadband performance • Retardation maintained to ±ë/100 over the bandwidth • Less sensitive to wavelength change than achromatic quartz-MgF2 wave plates • Better angular acceptance than achromatic quartz-MgF2 wave plates • Operate over a broad temperature range For a tutorial on wave plates, see page 437 Specifications Retarder Material Birefringent polymer film stack Substrate Material BK 7, grade A, fine annealed optical glass Retardation ë/4 or ë/2 Retardation Accuracy ±ë/100 Wavefront Distortion ë/4 at 632.8 nm over the full aperture Clear Aperture 10.2 mm Surface Quality 40-20 scratch-dig Transmitted Beam Deviation 1 arc min Acceptance Angle ± 7° Thickness 3.56 mm Housing Diameter 25.4 ±0.13 mm Housing Thickness 6.2 mm Temperature Range -20 °C to 50 °C Antireflection Coating Broadband, multilayer coating, Ravg <0.5% Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 622) Damage Threshold 500 W/cm2 CW, 0.3 J/cm2 with 10 nsec pulses, visible, 0.5 J/cm2 with 10 nsec pulses at 1064 nm, typical Housing Black anodized aluminum ë/4 Wave Plate Retardance 0.255 0.250 0.245 Retardance (waves) 0.80 0.90 1.00 1.10 1.20 Recommended Wavelength Range Normalized Wavelength Typical ë/2 Wave Plate Retardance 0.520 0.510 0.500 0.490 Normalized Wavelength Retardance (waves) 0.80 0.90 1.00 1.10 1.20 Recommended Wavelength Range Typical Internal Transmittance Wavelength Performance of Common ë/4 Wave Plates 0.300 0.275 0.250 0.225 Retardance (waves) 0.80 0.90 1.00 1.10 1.20 Zero-Order Polymer Achromatic Polymer Multiple-Order Quartz Normalized Wavelength Typical Ordering Information Wavelength (nm) Center Wavelength (nm) Diameter [mm (mm)] Clear Aperture (mm) Model Retardation Model Retardation ë/4 ë/2 460–655 545 25.4 (25.4) 10.2 10RP44-1 10RP42-1 615–860 720 25.4 (25.4) 10.2 10RP44-2 10RP42-2 715–1000 840 25.4 (25.4) 10.2 10RP44-3 10RP42-3 900–1270 1060 25.4 (25.4) 10.2 10RP44-4 10RP42-4 FAST AXIS 6.2 ø 10.2 ø 25.4 RS Series Rotation Stages page 911

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