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Zero-Order Precision Wave Plates

Zero-Order Precision Wave Plates

Product catalog summary

Overview: This document provides technical specifications and ordering information for Newport's true zero-order wave plates, which are optical components used to alter the polarization state of light. These wave plates are constructed from a birefringent polymer film between two high-precision BK 7 windows with broadband antireflection coatings.

Specifications:

Retarder Material: Birefringent polymer film
Substrate Material: BK 7, grade A, fine annealed optical glass
Wavelengths: Available at 488, 514.5, 532, 632.8, 670, 780, 830, 1064, 1300, and 1550 nm
Retardation: λ/4 or λ/2
Retardation Accuracy: ±λ/350
Wavefront Distortion: ≤λ/5 at 632.8 nm over the full aperture
Surface Quality: 40-20 scratch-dig
Transmitted Beam Deviation: ≤1 arc min
Acceptance Angle: ±9°
Diameter Tolerance: ±0.13 mm
Temperature Range: -20 °C to 50 °C
Antireflection Coating: Broadband, multilayer coating, R <0.5%
Cleaning: Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended
Damage Threshold: 500 W/cm² CW, 0.5 J/cm² with 10 nsec pulses at 1064 nm, 0.3 J/cm² with 10 nsec pulses at 532 nm
Housing: Black anodized aluminum

Benefits:

Less sensitive to wavelength change compared to quartz wave plates
Better angular acceptance than multiple-order or zero-order quartz wave plates
Large clear apertures are more affordable
Operates over a broad temperature range

Ordering Information: To order, substitute the desired standard wavelength (in nm) for "λ" in the part number. For example, model 20RP34-632.8 is a 50.8-mm diameter, λ/4 retardation, 632.8-nm wavelength wave plate. Available diameters and models include:

12.7 mm diameter: Model 05RP34-λ (λ/4), 05RP32-λ (λ/2)
25.4 mm diameter: Model 10RP34-λ (λ/4), 10RP32-λ (λ/2)
50.8 mm diameter: Model 20RP34-λ (λ/4), 20RP32-λ (λ/2) - available at specific wavelengths

Graphical Data: The document includes graphs showing typical retardance with angle of incidence and internal transmittance, highlighting the performance differences between zero-order quartz and polymer wave plates.

Catalog excerpts

582 O p t i c s Phone: 1-800-222-6440 • Fax: 1-949-253-1680 WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES 0.600 0.550 0.500 0.450 Normalized Wavelength Retardance (waves) 0.90 0.95 1.00 1.05 1.10 Typical ë/4 Wave Plate Retardance ë/2 Wave Plate Retardance 0.300 0.275 0.250 0.225 Retardance (waves) 0.90 0.95 1.00 1.05 1.10 Normalized Wavelength Typical Zero-Order Precision Wave Plates Newport’s true zero-order wave plates consist of a birefringent polymer film cemented between two high-precision BK 7 windows, each with a high efficiency, broadband antireflection coating. Polymer wave plates offer several benefits over quartz wave plates, such as better angular acceptance and less sensitivity to wavelength change. • Less sensitive to wavelength change than quartz wave plates • Better angular acceptance than either multiple-order or zero-order quartz wave plates • Large clear apertures are more affordable • Operate over a broad temperature range For a detailed tutorial on wave plates, see page 437 Specifications Retarder Material Birefringent polymer film Substrate Material BK 7, grade A, fine annealed optical glass Wavelength 488, 514.5, 532, 632.8, 670, 780, 830, 1064, 1300, and 1550 nm Retardation ë/4 or ë/2 Retardation Accuracy ±ë/350 Wavefront Distortion ë/5 at 632.8 nm over the full aperture Surface Quality 40-20 scratch-dig Transmitted Beam Deviation 1 arc min Acceptance Angle ±9° Diameter Tolerance ±0.13 mm Temperature Range -20 °C to 50 °C Antireflection Coating Broadband, multilayer coating, R <0.5% Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 622) 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 Housing Black anodized aluminum Ordering Information To order, substitute the desired standard wavelength (in nm) for "ë" in the part number. Wavelengths include: 488, 514.5, 532, 632.8, 670, 780, 830, 1064, 1300 and 1550 nm. For example, model 20RP34-632.8 is a 50.8-mm diameter, ë/4 retardation, 632.8-nm wavelength wave plate. Diameter (mm) Clear Aperture (mm) Thickness (mm) Model Retardation Model Retardation ë/4 ë/2 12.7 5.1 3.30 05RP34-ë 05RP32-ë 25.4 17.8 6.35 10RP34-ë 10RP32-ë 50.8* 30.5 9.65 20RP34-ë 20RP32-ë * 50.8 mm diameter is only available at 488, 514.5, 532, 632.8, 670 and 1064 nm. 100 90 80 70 60 1200 1600 Wavelength (nm) Transmission (%) 400 800 Typical Retardance with Angle of Incidence 0,70 0,60 0,50 0,40 Incidence Angle (degrees) Retardance (waves) 0 10 20 30 40 50 tilt around fast axis tilt around slow axis Zero-Order Quartz Zero-Order Polymer Typical Internal Transmittance C FAST AXIS ø A ø B Dimension (mm) Model øA øB C 05RP 12.7 5.1 5.7 10RP 25.4 17.8 8.9 20RP 50.8 30.5 12.6

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Zero-Order Precision Wave Plates

Zero-Order Precision Wave Plates

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