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T-BPD7254-M01 - Polka Dot Beamsplitter, Ø1", ZnSe Substrate

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T-BPD7254-M01 - Polka Dot Beamsplitter, Ø1", ZnSe Substrate

This Polka Dot Beamsplitter is made from Zinc Selenide (ZnSe) and provides high transmission over the 2.0 - 11.0 µm spectral range. It can be used from 0 to 45° AOI with only negligible changes to the reflected and transmitted intensity. Light should be incident on the gold-coated side to maximize the reflected intensity.

Specifications
Size Ø1"
Beamsplitting Ratio 50% ± 10%
Minimum Beam Diameter
for 50/50 Split
2 mm
Material ZnSe
Wavelength Range 2.0 - 11.0 µm
Coating Pattern Square-Coated Apertures
0.0042" (107 µm) Sides, 0.0018" (46 µm) Spacing
AR Coating (Both Sides)a 2 - 11 µm, Ravg ≤ 3.5% @ 45° AOI
Clear Aperture >90% Diameter
Surface Flatness λ/4 at 632.8 nm, Over Clear Aperture
Surface Quality 60-40 Scratch-Dig
Thickness 5.0 mm
Angle of Incidence 0 to 45°
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