IR Beamsplitter, Calcium Fluoride, 38.1 mm, 50R/50T Ratio
IR Beamsplitter, Calcium Fluoride, 38.1 mm, 50R/50T Ratio
Model: CAFBS11
Product Series Overview
IR Plate BeamsplittersThe CAFBS11 IR Beamsplitter is a 38.1 mm diameter, 3.00 mm thick Calcium Fluoride beamsplitter with 50/50 reflection/transmission ratio optimized for 45° angle of incidence. This beamsplitter is designed for broadband infrared applications covering spectral range from 2 to 8 μm. The back surface of the beamsplitter has a 3 arc minutes wedge to reduce undesired interference effects caused by the back reflections from both surfaces of the optics.
Specifications
- Wavelength Range2-8 µm
- Diameter38.1 mm
- MaterialCalcium Fluoride
- Coating Second SurfaceUncoated
- Angle of Incidence45°
- Reflection50 ±10%
- Transmission50 ±10%
- Surface Flatness≤2 λ at 632.8 nm over the clear aperture
- Surface Quality60-40 scratch-dig
- Diameter Tolerance+0.00/-0.13 mm
- Thickness3.0 mm
- Thickness Tolerance± 0.13 mm
- Parallelism3 arc minutes
- Clear Aperture> central 85% of diameter
- Cleaning
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