Metallized Cube Beamsplitters
- All four faces AR coated and flat to λ/4
- Inexpensive, yet effective for many beamsplitting requirements
- Both transmission/reflection typically 25% - with 50% absorption
- Standard cubes from 10 to 30mm
For white light applications where even intensity splitting is required over a broad wavelength region these simple cubes, with metallic coatings, make an ideal beamsplitter.
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| Size (mm) | Wavelength Range (mm) | Material | Surface Flatness | Surface Quality | Beam Deviation (arcmin) | Dimension tolerance | Clear Aperture | Transmission tolerance |
|---|---|---|---|---|---|---|---|---|
| 10.0 | 400-700 | BK7 | λ/4 | 40 - 20 | ≤ 10arcmin | ±0.2mm | 85% circle | Tav=30% |
| 15.0 | 400-700 | BK7 | λ/4 | 40 - 20 | ≤ 10arcmin | ±0.2mm | 85% circle | Tav=30% |
| 20.0 | 400-700 | BK7 | λ/4 | 40 - 20 | ≤ 10arcmin | ±0.2mm | 85% circle | Tav=30% |
| 25.0 | 400-700 | BK7 | λ/4 | 40 - 20 | ≤ 10arcmin | ±0.2mm | 85% circle | Tav=30% |
| 30.0 | 400-700 | BK7 | λ/4 | 40 - 20 | ≤ 10arcmin | ±0.2mm | 85% circle | Tav=30% |
| 10.0 | 780-850 | BK7 | λ/4 | 40 - 20 | ≤ 10arcmin | ±0.2mm | 85% circle | Tav=30% |
| 15.0 | 780-850 | BK7 | λ/4 | 40 - 20 | ≤ 10arcmin | ±0.2mm | 85% circle | Tav=30% |
| 20.0 | 780-850 | BK7 | λ/4 | 40 - 20 | ≤ 10arcmin | ±0.2mm | 85% circle | Tav=30% |