Crystals Materials
Zinc Sulfide (ZnS) for thermal imaging applications
Zinc Sulfide (ZnS) Multispectral Windows are manufactured from a water-free, multi-spectral grade of zinc sulfide that has low absorption and scatter properties over its broad transmission range of 0.4 - 12μm. Zinc Sulfide Multispectral is a chemical vapor deposited material which is commonly used in thermal imaging. With its excellent transmission properties in the visible and infrared, Zinc Sulfide Multispectral is the material of choice for systems that have both visible and mid-wave or long-wave infrared sensors.
| Material | Zinc Sulfide (ZnS) |
| Diameter | 3mm ~ 300mm |
| Thickness | >0.1mm |
| Dimension Tolerance | +0/-0.02mm |
| Angle Tolerance | ±15 arcsec |
| Surface Accuracy | λ/10 @ 633nm |
| Surface Quality S/D | 10–5 |
| Pyramid Tolerance | <5 arcmin |
| Bevel | <0.25mm X 45° |
| Coating | Available upon request |
| Crystal Structure | Cubic |
| Density | 5.27 g/cm³ |
| Crystal Size | <100 μm |
| Impurities | None > 0.05 mm |
| Resistivity | > 10^12 ohm-cm |
| Dielectric Constant | Consult Technical Personnel |
| Absorption Coefficient @10.6μm | <0.0005 cm^-1 |
| Thermal Optical Coefficient (dn/dT) @10.6μm | 6.1 × 10^-5 ℃ |
| Refractive Index Uniformity @0.6328μm | <3 × 10^-6 |
| Thermal Conductivity @20°C | 0.18 W/cm/℃ |
| Specific Heat | 0.356 J/g/℃ |
| Linear Expansion Coefficient @20°C | 7.57 × 10^-6/℃ |
| Young's Modulus | 67.2 GPa (9.75 × 10^6 psi) |
| Fracture Modulus | 55.1 MPa (8,000 psi) |
| Knoop Hardness | 105-120 kg/mm² |
| Poisson's Ratio | 0.28 |
| Fracture Toughness | 0.5 × 10^6 N/m^3/2 |
Stock specification list
If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
Anti-reflection coatings are available at your specified wavelength.
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
To inquiry or order a finished KYW laser rod, please specify the specification listed above, for common application, we only need to know the main specification: Nd-dopant concentration, sizes, and coating. For special request,
please specify specification in details for evaluation and fabrication.
| Part Number | Face size | Thickness | Surface Quality | Coating |
|---|---|---|---|---|
| WIN-080-020-ZnS | Dia 8.00 mm | 2.00 mm | 40/20 | UnCoated |
| WIN-127-020-ZnS | Dia 12.70 mm | 2.00 mm | 40/20 | UnCoated |
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