Beamsplitters
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Download Optics for CO2-Lasers Datasheet (PDF, 198 KB) |
Beamsplitters allow a certain percentage of incident energy to be reflected while transmitting the remainder. In most cases, beamsplitters are angle, wavelength and polarization sensitive.
Specifications:
| 1. | Material: | CVD-ZnSe |
| 2. | Diameter tolerance, mm: | +0.0 / -0.1 |
| 3. | Thickness tolerance, mm: | +/- 0.25 |
| 4. | Parallelism, arc min: | <= 3 |
| 5. | Clear aperture: | 90% of diameter |
| 6. | Surface quality, scr/dig: | 40/20 |
| 7. | Surface figure (power-irregularity) @ 633 nm, fringe: |
1 - 1/2 |
| 8. | Side 1: Reflectivity tolerance @ 10.6 µm, %: 1% - 5% |
+/- 0.5 x R |
| 6% - 85% | +/- 7 | |
| 86% - 93% | +/- 5 | |
| 94% - 99.5% | +/- 0.5 | |
| 9. | Side 2: AR Coating reflectivity per surface @ 10.6 µm: |
Typicaly < 1%, varies with polarisation and incidence angle |
| 10. | Angle of incidence, arc grad: | 45 |
Maximal diameter – 50.8 mm.
Standard sizes:
| Diameter | Thickness | ||
| inches | mm | inches | mm |
| 0.375 | 9.52 | 0.080 | 2.0 |
| 0.50 | 12.7 | 0.080 | 2.0 |
| 0.75 | 19.1 | 0.080 | 2.0 |
| 1.00 | 25.4 | 0.080 | 2.0 |
| 1.00 | 25.4 | 0.120 | 3.0 |
| 1.10 | 27.9 | 0.120 | 3.0 |
| 1.50 | 38.1 | 0.120 | 3.0 |
| 2.00 | 50.8 | 0.200 | 5.1 |
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