T-BPD5508-G01 - Polka Dot Beamsplitter, Ø2", CaF2 Substrate
T-BPD5508-G01 - Polka Dot Beamsplitter, Ø2", CaF2 Substrate
These Polka Dot Beamsplitters are made from Calcium Fluoride (CaF2) and provide high transmission over the 180 nm - 8.0 µm spectral range. They can be used from 0 to 45° AOI with only negligible changes to the reflected and transmitted intensity. Light should be incident on the aluminum-coated side to maximize the reflected intensity.
| Specifications | |
|---|---|
| Available Sizes | Ø1" or Ø2" |
| Beamsplitting Ratio | 50% ± 5% |
| Minimum Beam Diameter for 50/50 Split |
2 mm |
| Material | CaF2 |
| Wavelength Range | 0.18 - 8.0 µm |
| Coating Pattern | Square-Coated Apertures 0.0040" (100 µm) Sides, 0.0022" (56 µm) Spacing |
| Clear Aperture | >90% Diameter |
| Surface Flatness | λ/4 at 632.8 nm, Over Clear Aperture |
| Surface Quality | 60-40 Scratch-Dig |
| Thickness | 5 ± 0.3 mm (Ø1" Optics) 8.0 mm (Ø2" Optics) |
| Diameter Tolerance | +0.0 / -0.2 mm |
| Angle of Incidence | 0 to 45° |