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Optoelectronics and Components
Optical Components from Tower Optical
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Sales
Phone: +49 89 321412-43
sales[at]imm-photonics.de
Polarizating Beamsplitter Cubes
These beamsplitters are based upon using two complementary prisms. The output beam that is parallel to the input beam is p-polarized, while the orthogonal output beam is s-polarized.
| Material | BK7 grade A optical glass |
|---|---|
| Dimension range | 3.2 mm to50.8 mm |
| Dimensional tolerance | ± 3 arc min |
| Surface quality | 60/40 scratch/dig |
| Beam deviation | 3 arc min |
| Extinction ratio | > 100:1 |
| Principal transmittance | Tp > 95 % and Ts < 1 % |
| Principal reflectance | Rs > 99 % and Rp < 5% |
| Wavelength range | 226 nm to 2300 nm |
| Polarization beam splitter coating | On hypotenuse |
| AR coating | R < 0.25 % per face |
Non-polarizing Beamsplitter Plates
Non-Polarizing plate beamsplitter are mainly used to spilt a beam or combine beams. Both parts take different optical pathways.
| Material | BK7 grade A optical glass |
|---|---|
| Dimension range | 10 mm to 50.8 mm |
| Dimensional tolerance | ± 0.2 mm |
| Thickness tolerance | ± 0.2 mm |
| Flatness | λ/4 632.8 nm per 25 mm |
| Surface quality | 60/40 scratch/dig |
| Parallelism | 1 arc min |
| T/R | 50/50 ± 5 % for random polarization T = (Ts + Tp), R = (Rs + Rp) / 2 |
| Coating surface 1 | Single wavelength partial reflectance |
| Coating surface 2 | V AR coating |