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Extremely small loss for p-polarized beam |
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Separated by wavelength light is conveniently turned by 90° angle with minimum deviation |
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UVFS prisms provide 1.26° separation between 532 and 1064 nm |
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In a Pellin-Broca prism, an ordinary dispersing prism is split in half along the bisector of the apex angle.
Using a right angle prism, the two halves are joined to create a dispersing prism with an internal right angle bend obtained by total internal reflection.
The entrance beam is deviated at 90° angle to its initial direction.
Pellin-Broca Prisms
| Material | A | B | H | Ordering code |
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| BK7 | 11 mm | 20 mm | 6,4 mm | 14PBR-1-1 |
| BK7 | 23,5 mm | 40 mm | 12,7 mm | 14PBR-2-1 |
| UVFS | 11 mm | 20 mm | 6,4 mm | 14PBR-1-2 |
| UVFS | 15 mm | 26 mm | 15 mm | 14PBR-3-2 |
| UVFS | 23,5 mm | 40 mm | 12,7 mm | 14PBR-2-2 |
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Standard Specifications
| Material | BK7, UVFS |
| Dimension Tolerances | ±0.2 mm |
| Surface Quality | 20-10 scratch & dig |
| Flatness | λ/10 @ 633 nm |
| Angles | α= 79.5° ± 0.5°, β= 60° ± 1° |
| Design wavelength | 546.1 nm |
| Clear Aperture | >80% |
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Ordering
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