Active Member
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[China]
Address: Building 7, No. 116, Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province
Contact name:Jason
Wuhan Siwer Optics Co.,Ltd |
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* Low Dispersion
* Available Uncoated or AR Coated
* Ideal for Thermal Imaging, FLIR, and Medical Systems
Zinc Selenide Windows (ZnS Windows) are perfect for a wide variety of infrared applications including thermal imaging, FLIR, and medical systems. This chemical vapor deposited material has extensive usage in high power CO2 laser systems because of its low absorption coefficient and high resistance to thermal shock. Zinc Selenide (ZnSe) is a relatively soft material that scratches easily, and it is not recommended in harsh environments because its Knoop Hardness is only 120.
Note: Special care should be taken when handling Zinc Selenide as it is a toxic material. Always wear rubber or plastic gloves to avoid the risk of contamination.
| Material | CVD ZnSe |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Parallelism | 1 arc min |
| Surface Quality | 60-40 Scratch-Dig |
| Surface Flatness (Plano Side) | λ/2 at 633nm |
| Surface Irregularity (Peak to Valley) | λ/2 at 633nm |
| Clear Aperture | 90% |
| Chemical Formula | ZnSe |
| Molecular Weight | 144.33 |
| Crystal Class | Cubic, hexagonal |
| Crystal Structure | Polycrystalline |
| Density, g/cm3 at 293 K | 5.27 |
| Melting Temperature, K | 1790 |
| Thermal Conductivity, W/(m K) at 300 K | 18 |
| Thermal Expansion, 1/K | |
| at 173 K | 5.6 x 10-6 |
| at 273 K | 7.1 x 10-6 |
| at 473 K | 8.3 x 10-6 |
| Specific Heat, cal/(g K) at 296 K | 0.081 |
| Debye Temperature, K | 246 |
| Bandgap, eV | 2.7 |
| Solubility in water at 298 K | 0.001 g/100 g H2O |
| Knoop Hardness, kg/mm2(100 g load) | 105 |
| Young's Modulus, GPa | 70 |
| Bulk Modulus, GPa | 40 |
| Poisson's Ratio | 0.28 |
