Multiple Order Waveplates λ/2, λ/4
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Waveplates are used in the synthesis and analysis of polarized light. Quarter waveplates transform linearly polarized light into circularly polarized light, and vice-versa. Half waveplates rotate the plane of polarization of linearly polarized light through any angle. They also convert left circularly polarized light into right circularly polarized light, and vice-versa. Multiple Order Waveplates are made from a single crystalline quartz plate. Retardation varies quickly with wavelength, thus they are generally useful only at their design wavelength. Retardation is also a function of plate thickness and is slightly temperature dependent due to thermal expansion.
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RMI Standard Specifications
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Angle incidence:
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0°
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| Materials: |
Crystalline Quartz, Sapphire
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| Construction: |
Single multiple order plate |
| Transmitted Wavefront: |
λ/10 at 633 nm |
| Surface Quality: |
10 – 5, both surfaces |
| Diameter Tolerance: |
+ 0.00 mm, -0.25 mm
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| Thickness: |
1.0 mm (nominal) |
| Wedge: |
≤ 0.5 arc seconds |
| Bevels: |
Minimum safety bevel |
| Clear Aperture: |
Exceeds central 85% of diameter |
Anti-Reflection Coating:
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R ≤ 0.25% |
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Retardation Tolerance:
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λ/100 - λ/500 at 20°C |
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