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Multiple Order Waveplate
The multiple order waveplate is designed to give a retardance of several full waves, plus the desired fraction. This result in a single, physically robust component with desired performance. However, even small changed in wavelength or temperature will result in significant changes in the desired fractional retardance. They are less expensive and find use in many applications where the increased sensitivities are not an important.
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Attribute
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Specification
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Material
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Crystal Quartz
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Typical Diameter (Φmm)
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10.0, 12.7, 15.0, 20.0, 25.4, 30.0
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Diameter Tolerance (mm)
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+0.0/-0.2
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Wavefront distortion
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λ/8@633nm
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Retardation tolerance
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<λ/300 (General), <λ/500 (High Precision)
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Parallelism
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<3arc second.（General） , <1 arc second .(High Precision)
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Surface Quality
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20/10
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Clear Aperture
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Central 90%
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Coating
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<0.2% @wavelength
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