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IR Thin Film Plate Polarizers |
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IR Thin Film Plate Polarizers
IR Thin Film Plate Polarizers were
developed specifically for use in high power CO2 laser applications.
Designed to operate at Brewster’s Angle, they separate an incident,
unpolarized, monochromatic beam into its S and P polarization components.
The extinction ratio (TP/TS) exceeds 100:1 in the transmitted beam.
Maximum efficiency is achieved by fine angular tuning of the plate about
0B. These all dielectric coatings are highly sensitive to wavelength
and angle of incidence.
RMI STANDARD
SPECIFICATIONS
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| Design Wavelength: |
10.6 µm |
Angle incidence:
ZnSe:
Ge
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Brewster’s Angle (ΘB)
67.4° at 10.6 µm
76.0° at 10.6 µm
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| Materials: |
ZnSe, Ge |
Surface Figure:
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λ/40
at10.6 µm, both surfaces
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Surface Quality:
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40 – 20, both surfaces
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| Diameter Tolerance: |
+ 0.000", – 0.010" |
| Thickness Tolerance: |
± 0.010" |
| Wedge: |
≤ 3 arc minutes |
| Bevels: |
0.010" – 0.030" at 45º |
| Clear Aperture: |
Central 85% of diameter |
Reflectance:
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RS ≥ 99%
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Transmittance:
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Tp ≥ 95%
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Extinction Ratio:
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Tp/Ts ≥ 100:1
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Last Updated ( Friday, 27 April 2007 )
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