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Description
Diameter
Thickness
Coating
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Uncoated
Coated
Physical Properties
| Crystal type | cubic |
| Density, g/cm3 | 5.27 |
| Melting point, °C | 1525 |
| Refractive index @ 8-13 µm | n = 2.417-2.385 |
| Refractive index @ 10.6 µm | n = 2.403 |
| Transmission band, µm | 0.6÷22 |
| Bulk absorption coefficient cm-1 @ 10.6 µm | 0.6-1.0×10-3 |
| Coefficient of linear thermal expansion, °C-1 | 8.56×10-6 |
Specifications
| Material | ZnSe |
| Surface quality | 40-20 scratch & dig (MIL-PRF-13830B) |
| Clear aperture | 90% of the diameter |
| Diameter tolerance | +0.0 -0.13 mm |
| Thickness tolerance | ±0.1 mm |
| Parallelism | 3 arcmin |
| Flatness | λ /40 per inch @ 10.6 µm over clear aperture |
| Coating | both surfaces AR coated @ 10.6 µm, R ≤ 0.5% per surface |
| EKSMA Optics Zinc Selenide (ZnSe) Optical Components
79.94 kB |
- Low absorption in the red end of the visible spectrum
- Not hygroscopic
- Quite stable in the laboratory environment
Zinc selenide (ZnSe) is the most popular material for infrared applications. Due to a very wide transmission range covering 0.6-22 µm chemical vapor deposition grown ZnSe as a high optical quality material is used to manufacture optical components (windows, mirrors, lenses) for high power IR lasers.
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Contacts
- Address: Dvarcioniu st. 2B LT-10233 Vilnius, Lithuania
- Phone: (+370) 5 272 99 00
- Fax: (+370) 5 272 92 99
- E-mail: info@eksmaoptics.com
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